United States | Wikipedia audio article
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United States | Wikipedia audio article

The United States of America (USA), commonly
known as the United States (U.S. or US) or America, is a country composed of 50 states,
a federal district, five major self-governing territories, and various possessions. At 3.8
million square miles (9.8 million km2), the United States is the world’s third- or fourth-largest
country by total area and slightly smaller than the entire continent of Europe’s 3.9
million square miles (10.1 million km2). With a population of over 325 million people, the
U.S. is the third most populous country. The capital is Washington, D.C., and the largest
city by population is New York City. Forty-eight states and the capital’s federal district
are contiguous in North America between Canada and Mexico. The State of Alaska is in the
northwest corner of North America, bordered by Canada to the east and across the Bering
Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific
Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean
Sea, stretching across nine official time zones. The extremely diverse geography, climate,
and wildlife of the United States make it one of the world’s 17 megadiverse countries.Paleo-Indians
migrated from Siberia to the North American mainland at least 15,000 years ago. European
colonization began in the 16th century. The United States emerged from the thirteen British
colonies established along the East Coast. Numerous disputes between Great Britain and
the colonies following the French and Indian War led to the American Revolution, which
began in 1775, and the subsequent Declaration of Independence in 1776. The war ended in
1783 with the United States becoming the first country to gain independence from a European
power. The current constitution was adopted in 1788, with the first ten amendments, collectively
named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties.
The United States embarked on a vigorous expansion across North America throughout the 19th century,
acquiring new territories, displacing Native American tribes, and gradually admitting new
states until it spanned the continent by 1848. During the second half of the 19th century,
the Civil War led to the abolition of slavery. By the end of the century, the United States
had extended into the Pacific Ocean, and its economy, driven in large part by the Industrial
Revolution, began to soar. The Spanish–American War and World War I confirmed the country’s
status as a global military power. The United States emerged from World War II as a global
superpower, the first country to develop nuclear weapons, the only country to use them in warfare,
and a permanent member of the United Nations Security Council. During the Cold War, the
United States and the Soviet Union competed in the Space Race, culminating with the 1969
moon landing. The end of the Cold War and the collapse of the Soviet Union in 1991 left
the United States as the world’s sole superpower.The United States is the world’s oldest surviving
federation. It is a federal republic and a representative democracy, “in which majority
rule is tempered by minority rights protected by law”. The United States is a founding member
of the United Nations, World Bank, International Monetary Fund, Organization of American States
(OAS), and other international organizations. The United States is a highly developed country,
with the world’s largest economy by nominal GDP and second-largest economy by PPP, accounting
for approximately a quarter of global GDP. The U.S. economy is largely post-industrial,
characterized by the dominance of services and knowledge-based activities, although the
manufacturing sector remains the second-largest in the world. The United States is the world’s
largest importer and the second largest exporter of goods, by value. Although its population
is only 4.3% of the world total, the U.S. holds 33% of the total wealth in the world,
the largest share of global wealth concentrated in a single country. The United States ranks
among the highest nations in several measures of socioeconomic performance, including human
development, per capita GDP, and productivity per person, while experiencing a substantial
amount of income and wealth inequality. The United States is the foremost military power
in the world, making up a third of global military spending, and is a leading political,
cultural, and scientific force internationally.==Etymology==In 1507, the German cartographer Martin Waldseemüller
produced a world map on which he named the lands of the Western Hemisphere America in
honor of the Italian explorer and cartographer Amerigo Vespucci (Latin: Americus Vespucius).
The first documentary evidence of the phrase “United States of America” is from a letter
dated January 2, 1776, written by Stephen Moylan, Esq., George Washington’s aide-de-camp
and Muster-Master General of the Continental Army. Addressed to Lt. Col. Joseph Reed, Moylan
expressed his wish to carry the “full and ample powers of the United States of America”
to Spain to assist in the revolutionary war effort. The first known publication of the
phrase “United States of America” was in an anonymous essay in The Virginia Gazette newspaper
in Williamsburg, Virginia, on April 6, 1776.The second draft of the Articles of Confederation,
prepared by John Dickinson and completed by June 17, 1776, at the latest, declared “The
name of this Confederation shall be the ‘United States of America'”. The final version of
the Articles sent to the states for ratification in late 1777 contains the sentence “The Stile
of this Confederacy shall be ‘The United States of America'”. In June 1776, Thomas Jefferson
wrote the phrase “UNITED STATES OF AMERICA” in all capitalized letters in the headline
of his “original Rough draught” of the Declaration of Independence. This draft of the document
did not surface until June 21, 1776, and it is unclear whether it was written before or
after Dickinson used the term in his June 17 draft of the Articles of Confederation.The
short form “United States” is also standard. Other common forms are the “U.S.”, the “USA”,
and “America”. Colloquial names are the “U.S. of A.” and, internationally, the “States”.
“Columbia”, a name popular in poetry and songs of the late 18th century, derives its origin
from Christopher Columbus; it appears in the name “District of Columbia”.The phrase “United
States” was originally plural, a description of a collection of independent states—e.g.,
“the United States are”—including in the Thirteenth Amendment to the United States
Constitution, ratified in 1865. The singular form—e.g., “the United States is”—became
popular after the end of the American Civil War. The singular form is now standard; the
plural form is retained in the idiom “these United States”. The difference is more significant
than usage; it is a difference between a collection of states and a unit.A citizen of the United
States is an “American”. “United States”, “American” and “U.S.” refer to the country
adjectivally (“American values”, “U.S. forces”). In English, the word “American” rarely refers
to topics or subjects not directly connected with the United States.==History=====
Indigenous peoples and pre-Columbian history===The first inhabitants of North America migrated
from Siberia by way of the Bering land bridge and arrived at least 15,000 years ago, though
increasing evidence suggests an even earlier arrival. After crossing the land bridge, the
first Americans moved southward, either along the Pacific coast or through an interior ice-free
corridor between the Cordilleran and Laurentide ice sheets. The Clovis culture appeared around
11,000 BC, and it is considered to be an ancestor of most of the later indigenous cultures of
the Americas. While the Clovis culture was thought, throughout the late 20th century,
to represent the first human settlement of the Americas, in recent years consensus has
changed in recognition of pre-Clovis cultures.Over time, indigenous cultures in North America
grew increasingly complex, and some, such as the pre-Columbian Mississippian culture
in the southeast, developed advanced agriculture, grand architecture, and state-level societies.
From approximately 800 to 1600 AD the Mississippian culture flourished, and its largest city Cahokia
is considered the largest, most complex pre-Columbian archaeological site in the modern-day United
States. While in the Four Corners region, Ancestral Puebloans culture developed. Three
UNESCO World Heritage Sites in the United States are credited to the Pueblos: Mesa Verde
National Park, Chaco Culture National Historical Park, and Taos Pueblo. The earthworks constructed
by Native Americans of the Poverty Point culture in northeastern Louisiana have also been designated
a UNESCO World Heritage site. In the southern Great Lakes region, the Iroquois Confederacy
(Haudenosaunee) was established at some point between the twelfth and fifteenth centuries,
lasting until the end of the Revolutionary War.The date of the first settlements of the
Hawaiian Islands is a topic of continuing debate. Archaeological evidence seems to indicate
a settlement as early as 124 AD. During his third and final voyage, Captain James Cook
became the first European to begin formal contact with Hawaii. After his initial landfall
in January 1778 at Waimea harbor, Kauai, Cook named the archipelago the “Sandwich Islands”
after the fourth Earl of Sandwich—the acting First Lord of the Admiralty of the British
Royal Navy.===European settlements===After Spain sent Columbus on his first voyage
to the New World in 1492, other explorers followed. The first Europeans to arrive in
the territory of the modern United States were Spanish conquistadors such as Juan Ponce
de León, who made his first visit to Florida in 1513; however, if unincorporated territories
are accounted for, then credit would go to Christopher Columbus who landed in Puerto
Rico on his 1493 voyage. The Spanish set up the first settlements in Florida and New Mexico
such as Saint Augustine and Santa Fe. The French established their own as well along
the Mississippi River. Successful English settlement on the eastern coast of North America
began with the Virginia Colony in 1607 at Jamestown and the Pilgrims’ Plymouth Colony
in 1620. Many settlers were dissenting Christian groups who came seeking religious freedom.
The continent’s first elected legislative assembly, Virginia’s House of Burgesses created
in 1619, the Mayflower Compact, signed by the Pilgrims before disembarking, and the
Fundamental Orders of Connecticut, established precedents for the pattern of representative
self-government and constitutionalism that would develop throughout the American colonies.Most
settlers in every colony were small farmers, but other industries developed within a few
decades as varied as the settlements. Cash crops included tobacco, rice, and wheat. Extraction
industries grew up in furs, fishing and lumber. Manufacturers produced rum and ships, and
by the late colonial period, Americans were producing one-seventh of the world’s iron
supply. Cities eventually dotted the coast to support local economies and serve as trade
hubs. English colonists were supplemented by waves of Scotch-Irish and other groups.
As coastal land grew more expensive, freed indentured servants pushed further west.A
large-scale slave trade with English privateers was begun. The life expectancy of slaves was
much higher in North America than further south, because of less disease and better
food and treatment, leading to a rapid increase in the numbers of slaves. Colonial society
was largely divided over the religious and moral implications of slavery, and colonies
passed acts for and against the practice. But by the turn of the 18th century, African
slaves were replacing indentured servants for cash crop labor, especially in southern
regions.With the British colonization of Georgia in 1732, the 13 colonies that would become
the United States of America were established. All had local governments with elections open
to most free men, with a growing devotion to the ancient rights of Englishmen and a
sense of self-government stimulating support for republicanism. With extremely high birth
rates, low death rates, and steady settlement, the colonial population grew rapidly. Relatively
small Native American populations were eclipsed. The Christian revivalist movement of the 1730s
and 1740s known as the Great Awakening fueled interest in both religion and religious liberty. During the Seven Years’ War (in the United
States, known as the French and Indian War), British forces seized Canada from the French,
but the francophone population remained politically isolated from the southern colonies. Excluding
the Native Americans, who were being conquered and displaced, the 13 British colonies had
a population of over 2.1 million in 1770, about one-third that of Britain. Despite continuing
new arrivals, the rate of natural increase was such that by the 1770s only a small minority
of Americans had been born overseas. The colonies’ distance from Britain had allowed the development
of self-government, but their success motivated monarchs to periodically seek to reassert
royal authority.In 1774, the Spanish Navy ship Santiago, under Juan Pérez, entered
and anchored in an inlet of Nootka Sound, Vancouver Island, in present-day British Columbia.
Although the Spanish did not land, natives paddled to the ship to trade furs for abalone
shells from California. At the time, the Spanish were able to monopolize the trade between
Asia and North America, granting limited licenses to the Portuguese. When the Russians began
establishing a growing fur trading system in Alaska, the Spanish began to challenge
the Russians, with Pérez’s voyage being the first of many to the Pacific Northwest.After
having arrived in the Hawaiian islands in 1778, Captain Cook sailed north and then northeast
to explore the west coast of North America north of the Spanish settlements in Alta California.
He made landfall on the Oregon coast at approximately 44°30′ north latitude, naming his landing
point Cape Foulweather. Bad weather forced his ships south to about 43° north before
they could begin their exploration of the coast northward. In March 1778, Cook landed
on Bligh Island and named the inlet “King George’s Sound”. He recorded that the native
name was Nutka or Nootka, apparently misunderstanding his conversations at Friendly Cove/Yuquot;
his informant may have been explaining that he was on an island (itchme nutka, a place
you can “go around”). There may also have been confusion with Nuu-chah-nulth, the natives’
autonym (a name for themselves). It may also have simply been based on Cook’s mispronunciation
of Yuquot, the native name of the place.====Effects on and interaction with native
populations====With the progress of European colonization
in the territories of the contemporary United States, the Native Americans were often conquered
and displaced. The native population of America declined after Europeans arrived, and for
various reasons, primarily diseases such as smallpox and measles. Violence was not a significant
factor in the overall decline among Native Americans, though conflict among themselves
and with Europeans affected specific tribes and various colonial settlements.In the early
days of colonization, many European settlers were subject to food shortages, disease, and
attacks from Native Americans. Native Americans were also often at war with neighboring tribes
and allied with Europeans in their colonial wars. At the same time, however, many natives
and settlers came to depend on each other. Settlers traded for food and animal pelts,
natives for guns, ammunition and other European wares. Natives taught many settlers where,
when and how to cultivate corn, beans, and squash. European missionaries and others felt
it was important to “civilize” the Native Americans and urged them to adopt European
agricultural techniques and lifestyles.Captain James Cook’s last voyage included sailing
along the coast of North America and Alaska searching for a Northwest Passage for approximately
nine months. He returned to Hawaii to resupply, initially exploring the coasts of Maui and
the big island, trading with locals and then making anchor at Kealakekua Bay in January
1779. When his ships and company left the islands, a ship’s mast broke in bad weather,
forcing them to return in mid-February. Cook would be killed days later.===Independence and expansion (1776–1865)
===The American Revolutionary War was the first
successful colonial war of independence against a European power. Americans had developed
an ideology of “republicanism” asserting that government rested on the will of the people
as expressed in their local legislatures. They demanded their rights as Englishmen and
“no taxation without representation”. The British insisted on administering the empire
through Parliament, and the conflict escalated into war.The Second Continental Congress unanimously
adopted the Declaration of Independence on July 4, which recognized, in a long preamble,
that all men are created equal and endowed by their Creator with unalienable rights and
that those rights were not being protected by Great Britain, and declared, in the words
of the resolution, that the thirteen United Colonies formed an independent nation and
had no further allegiance to the British crown. The fourth day of July is celebrated annually
as Independence Day. The Second Continental Congress declared on September 9 “where, heretofore,
the words ‘United Colonies’ have been used, the stile be altered for the future to the
‘United States’ “. In 1777, the Articles of Confederation established a weak government
that operated until 1789.Britain recognized the independence of the United States following
their defeat at Yorktown in 1781. In the peace treaty of 1783, American sovereignty was recognized
from the Atlantic coast west to the Mississippi River. Nationalists led the Philadelphia Convention
of 1787 in writing the United States Constitution, ratified in state conventions in 1788. The
federal government was reorganized into three branches, on the principle of creating salutary
checks and balances, in 1789. George Washington, who had led the revolutionary army to victory,
was the first president elected under the new constitution. The Bill of Rights, forbidding
federal restriction of personal freedoms and guaranteeing a range of legal protections,
was adopted in 1791.Although the federal government criminalized the international slave trade
in 1808, after 1820, cultivation of the highly profitable cotton crop exploded in the Deep
South, and along with it, the slave population. The Second Great Awakening, especially 1800–1840,
converted millions to evangelical Protestantism. In the North, it energized multiple social
reform movements, including abolitionism; in the South, Methodists and Baptists proselytized
among slave populations. Americans’ eagerness to expand westward prompted
a long series of American Indian Wars. The Louisiana Purchase of French-claimed territory
in 1803 almost doubled the nation’s area. The War of 1812, declared against Britain
over various grievances and fought to a draw, strengthened U.S. nationalism. A series of
military incursions into Florida led Spain to cede it and other Gulf Coast territory
in 1819. The expansion was aided by steam power, when steamboats began traveling along
America’s large water systems, which were connected by new canals, such as the Erie
and the I&M; then, even faster railroads began their stretch across the nation’s land.From
1820 to 1850, Jacksonian democracy began a set of reforms which included wider white
male suffrage; it led to the rise of the Second Party System of Democrats and Whigs as the
dominant parties from 1828 to 1854. The Trail of Tears in the 1830s exemplified the Indian
removal policy that resettled Indians into the west on Indian reservations. The U.S.
annexed the Republic of Texas in 1845 during a period of expansionist Manifest destiny.
The 1846 Oregon Treaty with Britain led to U.S. control of the present-day American Northwest.
Victory in the Mexican–American War resulted in the 1848 Mexican Cession of California
and much of the present-day American Southwest. The California Gold Rush of 1848–49 spurred
western migration and the creation of additional western states. After the American Civil War,
new transcontinental railways made relocation easier for settlers, expanded internal trade
and increased conflicts with Native Americans. Over a half-century, the loss of the American
bison (sometimes called “buffalo”) was an existential blow to many Plains Indians cultures.
In 1869, a new Peace Policy nominally promised to protect Native-Americans from abuses, avoid
further war, and secure their eventual U.S. citizenship. Nonetheless, conflicts and state-sanctioned
murder, including the California Genocide, continued throughout the West into the 1900s.===Civil War and Reconstruction era===Differences of opinion regarding the slavery
of Africans and African Americans ultimately led to the American Civil War. Initially,
states entering the Union had alternated between slave and free states, keeping a sectional
balance in the Senate, while free states outstripped slave states in population and in the House
of Representatives. But with additional western territory and more free-soil states, tensions
between slave and free states mounted with arguments over federalism and disposition
of the territories, whether and how to expand or restrict slavery. This led to Missouri’s
controversial denouncement of the issue, as well as the formation of many short-lived
territories such as the State of Scott, a county that left Tennessee to stay anti-slavery.With
the 1860 election of Abraham Lincoln, the first president from the largely anti-slavery
Republican Party, conventions in thirteen slave states ultimately declared secession
and formed the Confederate States of America (the “South”), while the federal government
(the “Union”) maintained that secession was illegal. In order to bring about this secession,
military action was initiated by the secessionists, and the Union responded in kind. The ensuing
war would become the deadliest military conflict in American history, resulting in the deaths
of approximately 618,000 soldiers as well as many civilians. The South fought for the
freedom to own slaves, while the Union at first simply fought to maintain the country
as one united whole. Nevertheless, as casualties mounted after 1863 and Lincoln delivered his
Emancipation Proclamation, the main purpose of the war from the Union’s viewpoint became
the abolition of slavery. Indeed, when the Union ultimately won the war in April 1865,
each of the states in the defeated South was required to ratify the Thirteenth Amendment,
which prohibited slavery. Three amendments were added to the U.S. Constitution
in the years after the war: the aforementioned Thirteenth as well as the Fourteenth Amendment
providing citizenship to the nearly four million African Americans who had been slaves, and
the Fifteenth Amendment ensuring in theory that African Americans had the right to vote.
The war and its resolution led to a substantial increase in federal power aimed at reintegrating
and rebuilding the South while guaranteeing the rights of the newly freed slaves.
Reconstruction began in earnest following the war. While President Lincoln attempted
to foster friendship and forgiveness between the Union and the former Confederacy, an assassin’s
bullet on April 14, 1865, drove a wedge between North and South again. Republicans in the
federal government made it their goal to oversee the rebuilding of the South and to ensure
the rights of African Americans. They persisted until the Compromise of 1877 when the Republicans
agreed to cease protecting the rights of African Americans in the South in order for Democrats
to concede the presidential election of 1876. Southern white Democrats, calling themselves
“Redeemers”, took control of the South after the end of Reconstruction. From 1890 to 1910,
so-called Jim Crow laws disenfranchised most blacks and some poor whites throughout the
region. Blacks faced racial segregation, especially in the South. They also occasionally experienced
vigilante violence, including lynching.===Further immigration, expansion, and industrialization
===In the North, urbanization and an unprecedented
influx of immigrants from Southern and Eastern Europe supplied a surplus of labor for the
country’s industrialization and transformed its culture. National infrastructure including
telegraph and transcontinental railroads spurred economic growth and greater settlement and
development of the American Old West. The later invention of electric light and the
telephone would also affect communication and urban life.The end of the Indian Wars
further expanded acreage under mechanical cultivation, increasing surpluses for international
markets. Mainland expansion was completed by the purchase of Alaska from Russia in 1867.
In 1893, pro-American elements in Hawaii overthrew the monarchy and formed the Republic of Hawaii,
which the U.S. annexed in 1898. Puerto Rico, Guam, and the Philippines were ceded by Spain
in the same year, following the Spanish–American War. American Samoa was acquired by the United
States in 1900 after the end of the Second Samoan Civil War. The United States purchased
the U.S. Virgin Islands from Denmark in 1917.Rapid economic development during the late 19th
and early 20th centuries fostered the rise of many prominent industrialists. Tycoons
like Cornelius Vanderbilt, John D. Rockefeller, and Andrew Carnegie led the nation’s progress
in railroad, petroleum, and steel industries. Banking became a major part of the economy,
with J. P. Morgan playing a notable role. Edison and Tesla undertook the widespread
distribution of electricity to industry, homes, and for street lighting. Henry Ford revolutionized
the automotive industry. The American economy boomed, becoming the world’s largest, and
the United States achieved great power status. These dramatic changes were accompanied by
social unrest and the rise of populist, socialist, and anarchist movements. This period eventually
ended with the advent of the Progressive Era, which saw significant reforms in many societal
areas, including women’s suffrage, alcohol prohibition, regulation of consumer goods,
greater antitrust measures to ensure competition and attention to worker conditions.===World War I, Great Depression, and World
War II===The United States remained neutral from the
outbreak of World War I, in 1914, until 1917 when it joined the war as an “associated power”,
alongside the formal Allies of World War I, helping to turn the tide against the Central
Powers. In 1919, President Woodrow Wilson took a leading diplomatic role at the Paris
Peace Conference and advocated strongly for the U.S. to join the League of Nations. However,
the Senate refused to approve this and did not ratify the Treaty of Versailles that established
the League of Nations.In 1920, the women’s rights movement won passage of a constitutional
amendment granting women’s suffrage. The 1920s and 1930s saw the rise of radio for mass communication
and the invention of early television. The prosperity of the Roaring Twenties ended with
the Wall Street Crash of 1929 and the onset of the Great Depression. After his election
as president in 1932, Franklin D. Roosevelt responded with the New Deal, which included
the establishment of the Social Security system. The Great Migration of millions of African
Americans out of the American South began before World War I and extended through the
1960s; whereas the Dust Bowl of the mid-1930s impoverished many farming communities and
spurred a new wave of western migration.At first effectively neutral during World War
II while Germany conquered much of continental Europe, the United States began supplying
material to the Allies in March 1941 through the Lend-Lease program. On December 7, 1941,
the Empire of Japan launched a surprise attack on Pearl Harbor, prompting the United States
to join the Allies against the Axis powers. During the war, the United States was referred
as one of the “Four Policemen” of Allies power who met to plan the postwar world, along with
Britain, the Soviet Union and China. Although the nation lost more than 400,000 soldiers,
it emerged relatively undamaged from the war with even greater economic and military influence. The United States played a leading role in
the Bretton Woods and Yalta conferences with the United Kingdom, the Soviet Union, and
other Allies, which signed agreements on new international financial institutions and Europe’s
postwar reorganization. As an Allied victory was won in Europe, a 1945 international conference
held in San Francisco produced the United Nations Charter, which became active after
the war. The United States developed the first nuclear weapons and used them on Japan in
the cities of Hiroshima and Nagasaki; causing the Japanese to surrender on September 2,
ending World War II. Parades and celebrations followed in what is known as Victory Day,
or V-J Day.===Cold War and civil rights era===After World War II the United States and the
Soviet Union jockeyed for power during what became known as the Cold War, driven by an
ideological divide between capitalism and communism and, according to the school of
geopolitics, a divide between the maritime Atlantic and the continental Eurasian camps.
They dominated the military affairs of Europe, with the U.S. and its NATO allies on one side
and the USSR and its Warsaw Pact allies on the other. The U.S. developed a policy of
containment towards the expansion of communist influence. While the U.S. and Soviet Union
engaged in proxy wars and developed powerful nuclear arsenals, the two countries avoided
direct military conflict. The United States often opposed Third World
movements that it viewed as Soviet-sponsored, and occasionally pursued direct action for
regime change against left-wing governments. American troops fought communist Chinese and
North Korean forces in the Korean War of 1950–53. The Soviet Union’s 1957 launch of the first
artificial satellite and its 1961 launch of the first manned spaceflight initiated a “Space
Race” in which the United States became the first nation to land a man on the moon in
1969. A proxy war in Southeast Asia eventually evolved into full American participation,
as the Vietnam War. At home, the U.S. experienced sustained economic
expansion and a rapid growth of its population and middle class. Construction of an Interstate
Highway System transformed the nation’s infrastructure over the following decades. Millions moved
from farms and inner cities to large suburban housing developments. In 1959 Hawaii became
the 50th and last U.S. state added to the country. The growing Civil Rights Movement
used nonviolence to confront segregation and discrimination, with Martin Luther King Jr.
becoming a prominent leader and figurehead. A combination of court decisions and legislation,
culminating in the Civil Rights Act of 1968, sought to end racial discrimination. Meanwhile,
a counterculture movement grew which was fueled by opposition to the Vietnam war, black nationalism,
and the sexual revolution. The launch of a “War on Poverty” expanded
entitlements and welfare spending, including the creation of Medicare and Medicaid, two
programs that provide health coverage to the elderly and poor, respectively, and the means-tested
Food Stamp Program and Aid to Families with Dependent Children.The 1970s and early 1980s
saw the onset of stagflation. After his election in 1980, President Ronald Reagan responded
to economic stagnation with free-market oriented reforms. Following the collapse of détente,
he abandoned “containment” and initiated the more aggressive “rollback” strategy towards
the USSR. After a surge in female labor participation over the previous decade, by 1985 the majority
of women aged 16 and over were employed.The late 1980s brought a “thaw” in relations with
the USSR, and its collapse in 1991 finally ended the Cold War. This brought about unipolarity
with the U.S. unchallenged as the world’s dominant superpower. The concept of Pax Americana,
which had appeared in the post-World War II period, gained wide popularity as a term for
the post-Cold War new world order.===Contemporary history===After the Cold War, the conflict in the Middle
East triggered a crisis in 1990, when Iraq under Saddam Hussein invaded and attempted
to annex Kuwait, an ally of the United States. Fearing that the instability would spread
to other regions, President George H.W. Bush launched Operation Desert Shield, a defensive
force buildup in Saudi Arabia, and Operation Desert Storm, in a staging titled the Gulf
War; waged by coalition forces from 34 nations, led by the United States against Iraq ending
in the successful expulsion of Iraqi forces from Kuwait, restoring the former monarchy.Originating
in U.S. defense networks, the Internet spread to international academic networks, and then
to the public in the 1990s, greatly affecting the global economy, society, and culture.Due
to the dot-com boom, stable monetary policy under Alan Greenspan, and reduced social welfare
spending, the 1990s saw the longest economic expansion in modern U.S. history, ending in
2001. Beginning in 1994, the U.S. entered into the North American Free Trade Agreement
(NAFTA), linking 450 million people producing $17 trillion worth of goods and services.
The goal of the agreement was to eliminate trade and investment barriers among the U.S.,
Canada, and Mexico by January 1, 2008. Trade among the three partners has soared since
NAFTA went into force.On September 11, 2001, Al-Qaeda terrorists struck the World Trade
Center in New York City and the Pentagon near Washington, D.C., killing nearly 3,000 people.
In response, the United States launched the War on Terror, which included war in Afghanistan
and the 2003–11 Iraq War. In 2007, the Bush administration ordered a major troop surge
in the Iraq War, which successfully reduced violence and led to greater stability in the
region.Government policy designed to promote affordable housing, widespread failures in
corporate and regulatory governance, and historically low interest rates set by the Federal Reserve
led to the mid-2000s housing bubble, which culminated with the 2008 financial crisis,
the largest economic contraction in the nation’s history since the Great Depression. Barack
Obama, the first African-American and multiracial president, was elected in 2008 amid the crisis,
and subsequently passed stimulus measures and the Dodd-Frank Wall Street Reform and
Consumer Protection Act in an attempt to mitigate its negative effects and ensure there would
not be a repeat of the crisis. The stimulus facilitated infrastructure improvements and
a relative decline in unemployment. Dodd-Frank improved financial stability and consumer
protection, although there has been debate about its effects on the economy.In 2010,
the Obama administration passed the Affordable Care Act, which made the most sweeping reforms
to the nation’s healthcare system in nearly five decades, including mandates, subsidies
and insurance exchanges. The law caused a significant reduction in the number and percentage
of people without health insurance, with 24 million covered during 2016, but remains controversial
due to its impact on healthcare costs, insurance premiums, and economic performance. Although
the recession reached its trough in June 2009, voters remained frustrated with the slow pace
of the economic recovery. The Republicans, who stood in opposition to Obama’s policies,
won control of the House of Representatives with a landslide in 2010 and control of the
Senate in 2014.American forces in Iraq were withdrawn in large numbers in 2009 and 2010,
and the war in the region was declared formally over in December 2011. The withdrawal caused
an escalation of sectarian insurgency, leading to the rise of the Islamic State of Iraq and
the Levant, the successor of al-Qaeda in the region. In 2014, Obama announced a restoration
of full diplomatic relations with Cuba for the first time since 1961. The next year,
the United States as a member of the P5+1 countries signed the Joint Comprehensive Plan
of Action, an agreement aimed to slow the development of Iran’s nuclear program, though
the U.S. withdrew from the deal in May 2018. In the United States presidential election
of 2016, Republican Donald Trump was elected as the 45th president of the United States.
Trump is both the oldest and wealthiest person elected president in United States history.==Geography, climate, and environment==The land area of the entire United States
is approximately 3,800,000 square miles (9,841,955 km2), with the contiguous United States making
up 2,959,064 square miles (7,663,940.6 km2) of that. Alaska, separated from the contiguous
United States by Canada, is the largest state at 663,268 square miles (1,717,856.2 km2).
Hawaii, occupying an archipelago in the central Pacific, southwest of North America, is 10,931
square miles (28,311 km2) in area. The populated territories of Puerto Rico, American Samoa,
Guam, Northern Mariana Islands, and U.S. Virgin Islands together cover 9,185 square miles
(23,789 km2). Measured by only land area, the United States is third in size behind
Russia and China, just ahead of Canada.The United States is the world’s third- or fourth-largest
nation by total area (land and water), ranking behind Russia and Canada and just above or
below China. The ranking varies depending on how two territories disputed by China and
India are counted, and how the total size of the United States is measured. The Encyclopædia
Britannica, for instance, lists the size of the United States as 3,677,649 square miles
(9,525,067 km2), as they do not count the country’s coastal or territorial waters. The
World Factbook, which includes those waters, gives 3,796,742 square miles (9,833,517 km2).The
coastal plain of the Atlantic seaboard gives way further inland to deciduous forests and
the rolling hills of the Piedmont. The Appalachian Mountains divide the eastern seaboard from
the Great Lakes and the grasslands of the Midwest. The Mississippi–Missouri River,
the world’s fourth longest river system, runs mainly north–south through the heart of
the country. The flat, fertile prairie of the Great Plains stretches to the west, interrupted
by a highland region in the southeast. The Rocky Mountains, at the western edge of
the Great Plains, extend north to south across the country, reaching altitudes higher than
14,000 feet (4,300 m) in Colorado. Farther west are the rocky Great Basin and deserts
such as the Chihuahua and Mojave. The Sierra Nevada and Cascade mountain ranges run close
to the Pacific coast, both ranges reaching altitudes higher than 14,000 feet (4,300 m).
The lowest and highest points in the contiguous United States are in the state of California,
and only about 84 miles (135 km) apart. At an elevation of 20,310 feet (6,190.5 m), Alaska’s
Denali (Mount McKinley) is the highest peak in the country and North America. Active volcanoes
are common throughout Alaska’s Alexander and Aleutian Islands, and Hawaii consists of volcanic
islands. The supervolcano underlying Yellowstone National Park in the Rockies is the continent’s
largest volcanic feature. The United States has the most ecoregions out of any country
in the world.The United States, with its large size and geographic variety, includes most
climate types. To the east of the 100th meridian, the climate ranges from humid continental
in the north to humid subtropical in the south. The Great Plains west of the 100th meridian
are semi-arid. Much of the Western mountains have an alpine climate. The climate is arid
in the Great Basin, desert in the Southwest, Mediterranean in coastal California, and oceanic
in coastal Oregon and Washington and southern Alaska. Most of Alaska is subarctic or polar.
Hawaii and the southern tip of Florida are tropical, as are the populated territories
in the Caribbean and the Pacific. Extreme weather is not uncommon—the states bordering
the Gulf of Mexico are prone to hurricanes, and most of the world’s tornadoes occur within
the country, mainly in Tornado Alley areas in the Midwest and South.===Wildlife===The U.S. ecology is megadiverse: about 17,000
species of vascular plants occur in the contiguous United States and Alaska, and over 1,800 species
of flowering plants are found in Hawaii, few of which occur on the mainland. The United
States is home to 428 mammal species, 784 bird species, 311 reptile species, and 295
amphibian species. About 91,000 insect species have been described. The bald eagle is both
the national bird and national animal of the United States, and is an enduring symbol of
the country itself.There are 59 national parks and hundreds of other federally managed parks,
forests, and wilderness areas. Altogether, the government owns about 28% of the country’s
land area. Most of this is protected, though some is leased for oil and gas drilling, mining,
logging, or cattle ranching; about .86% is used for military purposes.Environmental issues
have been on the national agenda since 1970. Environmental controversies include debates
on oil and nuclear energy, dealing with air and water pollution, the economic costs of
protecting wildlife, logging and deforestation, and international responses to global warming.
Many federal and state agencies are involved. The most prominent is the Environmental Protection
Agency (EPA), created by presidential order in 1970. The idea of wilderness has shaped
the management of public lands since 1964, with the Wilderness Act. The Endangered Species
Act of 1973 is intended to protect threatened and endangered species and their habitats,
which are monitored by the United States Fish and Wildlife Service.==Demographics=====
Population===The U.S. Census Bureau estimated the country’s
population to be 325,719,178 as of July 1, 2017, and to be adding 1 person (net gain)
every 13 seconds, or about 6,646 people per day. The U.S. population almost quadrupled
during the 20th century, from 76.2 million in 1900 to 281.4 million in 2000. The third
most populous nation in the world, after China and India, the United States is the only major
industrialized nation in which large population increases are projected. In the 1800s the
average woman had 7.04 children; by the 1900s this number had decreased to 3.56. Since the
early 1970s the birth rate has been below the replacement rate of 2.1 with 1.86 children
per woman in 2014. Foreign-born immigration has caused the U.S. population to continue
its rapid increase with the foreign-born population doubling from almost 20 million in 1990 to
over 40 million in 2010, representing one-third of the population increase. The foreign-born
population reached 45 million in 2015. The United States has a very diverse population;
37 ancestry groups have more than one million members. German Americans are the largest
ethnic group (more than 50 million) – followed by Irish Americans (circa 37 million), Mexican
Americans (circa 31 million) and English Americans (circa 28 million).White Americans (mostly
European ancestry group with 73.1% of total population) are the largest racial group;
black Americans are the nation’s largest racial minority (note that in the U.S. Census, Hispanic
and Latino Americans are counted as an ethnic group, not a “racial” group), and third-largest
ancestry group. Asian Americans are the country’s second-largest racial minority; the three
largest Asian American ethnic groups are Chinese Americans, Filipino Americans, and Indian
Americans. According to a 2015 survey, the largest American community with European ancestry
is German Americans, which consists of more than 14% of total population. In 2010, the
U.S. population included an estimated 5.2 million people with some American Indian or
Alaska Native ancestry (2.9 million exclusively of such ancestry) and 1.2 million with some
native Hawaiian or Pacific island ancestry (0.5 million exclusively). The census counted
more than 19 million people of “Some Other Race” who were “unable to identify with any”
of its five official race categories in 2010, over 18.5 million (97%) of whom are of Hispanic
ethnicity. The population growth of Hispanic and Latino
Americans (the terms are officially interchangeable) is a major demographic trend. The 50.5 million
Americans of Hispanic descent are identified as sharing a distinct “ethnicity” by the Census
Bureau; 64% of Hispanic Americans are of Mexican descent. Between 2000 and 2010, the country’s
Hispanic population increased 43% while the non-Hispanic population rose just 4.9%. Much
of this growth is from immigration; in 2007, 12.6% of the U.S. population was foreign-born,
with 54% of that figure born in Latin America.Minorities (as defined by the Census Bureau as all those
beside non-Hispanic, non-multiracial whites) constituted 37.2% of the population in 2012
and over 50% of children under age one, and are projected to constitute the majority by
2044.The United States has a birth rate of 13 per 1,000, which is 5 births below the
world average. Its population growth rate is positive at 0.7%, higher than that of many
developed nations. In fiscal year 2016, over one million immigrants (most of whom entered
through family reunification) were granted legal residence. Mexico has been the leading
source of new residents since the 1965 Immigration Act. China, India, and the Philippines have
been in the top four sending countries every year since the 1990s. As of 2012, approximately
11.4 million residents are illegal immigrants. As of 2015, 47% of all immigrants are Hispanic,
26% are Asian, 18% are white and 8% are black. The percentage of immigrants who are Asian
is increasing while the percentage who are Hispanic is decreasing.A 2017 Gallup poll
concluded that 4.5% of adult Americans identified as LGBT with 5.1% of women identifying as
LGBT, compared with 3.9% of men. The highest percentage came from the District of Columbia
(10%), while the lowest state was North Dakota at 1.7%.About 82% of Americans live in urban
areas (including suburbs); about half of those reside in cities with populations over 50,000.
The U.S. has numerous clusters of cities known as megaregions, the largest being the Great
Lakes Megalopolis followed by the Northeast Megalopolis and Southern California. In 2008,
273 incorporated municipalities had populations over 100,000, nine cities had more than one
million residents, and four global cities had over two million (New York, Los Angeles,
Chicago, and Houston). There are 52 metropolitan areas with populations greater than one million.
Of the 50 fastest-growing metro areas, 47 are in the West or South. The metro areas
of San Bernardino, Dallas, Houston, Atlanta, and Phoenix all grew by more than a million
people between 2000 and 2008.===Language===English (American English) is the de facto
national language. Although there is no official language at the federal level, some laws—such
as U.S. naturalization requirements—standardize English. In 2010, about 230 million, or 80%
of the population aged five years and older, spoke only English at home. Spanish, spoken
by 12% of the population at home, is the second most common language and the most widely taught
second language. Some Americans advocate making English the country’s official language, as
it is in 32 states.Both Hawaiian and English are official languages in Hawaii, by state
law. Alaska recognizes twenty Native languages as well as English. While neither has an official
language, New Mexico has laws providing for the use of both English and Spanish, as Louisiana
does for English and French. Other states, such as California, mandate the publication
of Spanish versions of certain government documents including court forms.Several insular
territories grant official recognition to their native languages, along with English:
Samoan is officially recognized by American Samoa. Chamorro is an official language of
Guam. Both Carolinian and Chamorro have official recognition in the Northern Mariana Islands.
Spanish is an official language of Puerto Rico and is more widely spoken than English
there.The most widely taught foreign languages in the United States, in terms of enrollment
numbers from kindergarten through university undergraduate studies, are: Spanish (around
7.2 million students), French (1.5 million), and German (500,000). Other commonly taught
languages (with 100,000 to 250,000 learners) include Latin, Japanese, ASL, Italian, and
Chinese. 18% of all Americans claim to speak at least one language in addition to English.===Religion===The First Amendment of the U.S. Constitution
guarantees the free exercise of religion and forbids Congress from passing laws respecting
its establishment. In a 2013 survey, 56% of Americans said that
religion played a “very important role in their lives”, a far higher figure than that
of any other wealthy nation. In a 2009 Gallup poll, 42% of Americans said that they attended
church weekly or almost weekly; the figures ranged from a low of 23% in Vermont to a high
of 63% in Mississippi.As with other Western countries, the U.S. is becoming less religious.
Irreligion is growing rapidly among Americans under 30. Polls show that overall American
confidence in organized religion has been declining since the mid to late 1980s, and
that younger Americans, in particular, are becoming increasingly irreligious. According
to a 2012 study, the Protestant share of the U.S. population had dropped to 48%, thus ending
its status as religious category of the majority for the first time. Americans with no religion
have 1.7 children compared to 2.2 among Christians. The unaffiliated are less likely to get married
with 37% marrying compared to 52% of Christians.According to a 2014 survey, 70.6% of adults in the United
States identified themselves as Christians; Protestants accounted for 46.5%, while Roman
Catholics, at 20.8%, formed the largest single denomination. In 2014, 5.9% of the U.S. adult
population claimed a non-Christian religion. These include Judaism (1.9%), Hinduism (1.2%),
Buddhism (0.9%), and Islam (0.9%). The survey also reported that 22.8% of Americans described
themselves as agnostic, atheist or simply having no religion—up from 8.2% in 1990.
There are also Unitarian Universalist, Scientologist, Baha’i, Sikh, Jain, Shinto, Confucian, Taoist,
Druid, Native American, Wiccan, humanist and deist communities.Protestantism is the largest
Christian religious grouping in the United States, accounting for almost half of all
Americans. Baptists collectively form the largest branch of Protestantism at 15.4%,
and the Southern Baptist Convention is the largest individual Protestant denomination
at 5.3% of the U.S. population. Apart from Baptists, other Protestant categories include
nondenominational Protestants, Methodists, Pentecostals, unspecified Protestants, Lutherans,
Presbyterians, Congregationalists, other Reformed, Episcopalians/Anglicans, Quakers, Adventists,
Holiness, Christian fundamentalists, Anabaptists, Pietists, and multiple others. Two-thirds
of American Protestants consider themselves to be born again. Roman Catholicism in the
United States has its origin primarily in the Spanish and French colonization of the
Americas, as well as in the English colony of Maryland. It later grew because of Irish,
Italian, Polish, German and Hispanic immigration. Rhode Island has the highest percentage of
Catholics, with 40 percent of the total population. Utah is the only state where Mormonism is
the religion of the majority of the population. The Mormon Corridor also extends to parts
of Arizona, California, Idaho, Nevada and Wyoming. Eastern Orthodoxy is claimed by 5%
of people in Alaska, a former Russian colony, and maintains a presence on the U.S. mainland
due to recent immigration from Eastern Europe. Finally, a number of other Christian groups
are active across the country, including the Oneness Pentecostals, Jehovah’s Witnesses,
Restorationists, Churches of Christ, Christian Scientists, Unitarians and many others.
The Bible Belt is an informal term for a region in the Southern United States in which socially
conservative evangelical Protestantism is a significant part of the culture and Christian
church attendance across the denominations is generally higher than the nation’s average.
By contrast, religion plays the least important role in New England and in the Western United
States.===Family structure===As of 2007, 58% of Americans age 18 and over
were married, 6% were widowed, 10% were divorced, and 25% had never been married. Women now
work mostly outside the home and receive a majority of bachelor’s degrees.The U.S. teenage
pregnancy rate is 26.5 per 1,000 women. The rate has declined by 57% since 1991. In 2013,
the highest teenage birth rate was in Alabama, and the lowest in Wyoming. Abortion is legal
throughout the U.S., owing to Roe v. Wade, a 1973 landmark decision by the Supreme Court
of the United States. While the abortion rate is falling, the abortion ratio of 241 per
1,000 live births and abortion rate of 15 per 1,000 women aged 15–44 remain higher
than those of most Western nations. In 2013, the average age at first birth was 26 and
40.6% of births were to unmarried women.The total fertility rate (TFR) in 2016 was 1.82
births per 1000 woman. Adoption in the United States is common and relatively easy from
a legal point of view (compared to other Western countries). In 2001, with over 127,000 adoptions,
the U.S. accounted for nearly half of the total number of adoptions worldwide. Same-sex
marriage is legal nationwide and it is legal for same-sex couples to adopt. Polygamy is
illegal throughout the U.S.===Health===The United States has a life expectancy of
79.8 years at birth, up from 75.2 years in 1990. Life expectancy ranged from a high of
81.3 years in Hawaii to a low of 73.4 years in American Samoa. The infant mortality rate
of 6.17 per thousand places the United States 56th-lowest out of 224 countries.Increasing
obesity in the United States and health improvements elsewhere contributed to lowering the country’s
rank in life expectancy from 11th in the world in 1987, to 42nd in 2007. Obesity rates have
more than doubled in the last 30 years, are the highest in the industrialized world, and
are among the highest anywhere. Approximately one-third of the adult population is obese
and an additional third is overweight. Obesity-related type 2 diabetes is considered epidemic by
health care professionals.In 2010, coronary artery disease, lung cancer, stroke, chronic
obstructive pulmonary diseases, and traffic accidents caused the most years of life lost
in the U.S. Low back pain, depression, musculoskeletal disorders, neck pain, and anxiety caused the
most years lost to disability. The most deleterious risk factors were poor diet, tobacco smoking,
obesity, high blood pressure, high blood sugar, physical inactivity, and alcohol use. Alzheimer’s
disease, drug abuse, kidney disease, cancer, and falls caused the most additional years
of life lost over their age-adjusted 1990 per-capita rates. U.S. teenage pregnancy and
abortion rates are substantially higher than in other Western nations, especially among
blacks and Hispanics. Suicide rates have increased in nearly every state from 1999 through 2016,
and is a leading cause of death in the United States. Drug overdoses, two-thirds of which
are from opioids, are the leading cause of death for those under the age of 50. The CDC
reported in November 2018 that increased deaths from suicides and drug overdoses have decreased
life expectancy in the U.S.The U.S. is a global leader in medical innovation. America solely
developed or contributed significantly to 9 of the top 10 most important medical innovations
since 1975 as ranked by a 2001 poll of physicians, while the European Union and Switzerland together
contributed to five. Since 1966, more Americans have received the Nobel Prize in Medicine
than the rest of the world combined. From 1989 to 2002, four times more money was invested
in private biotechnology companies in America than in Europe. The U.S. health-care system
far outspends any other nation, measured in both per capita spending and percentage of
GDP.Health-care coverage in the United States is a combination of public and private efforts
and is not universal. In 2014, 13.4% of the population did not carry health insurance.
The subject of uninsured and underinsured Americans is a major political issue. In 2006,
Massachusetts became the first state to mandate universal health insurance. Federal legislation
passed in early 2010 would ostensibly create a near-universal health insurance system around
the country by 2014, though the bill and its ultimate effect are issues of controversy.===Education===American public education is operated by state
and local governments, regulated by the United States Department of Education through restrictions
on federal grants. In most states, children are required to attend school from the age
of six or seven (generally, kindergarten or first grade) until they turn 18 (generally
bringing them through twelfth grade, the end of high school); some states allow students
to leave school at 16 or 17.About 12% of children are enrolled in parochial or nonsectarian
private schools. Just over 2% of children are homeschooled. The U.S. spends more on
education per student than any nation in the world, spending more than $11,000 per elementary
student in 2010 and more than $12,000 per high school student. Some 80% of U.S. college
students attend public universities.The United States has many competitive private and public
institutions of higher education. The majority of the world’s top universities listed by
different ranking organizations are in the U.S. There are also local community colleges
with generally more open admission policies, shorter academic programs, and lower tuition.
Of Americans 25 and older, 84.6% graduated from high school, 52.6% attended some college,
27.2% earned a bachelor’s degree, and 9.6% earned graduate degrees. The basic literacy
rate is approximately 99%. The United Nations assigns the United States an Education Index
of 0.97, tying it for 12th in the world.As for public expenditures on higher education,
the U.S. trails some other OECD nations but spends more per student than the OECD average,
and more than all nations in combined public and private spending. As of 2018, student
loan debt exceeded 1.5 trillion dollars, more than Americans owe on credit cards.==Government and politics==The United States is the world’s oldest surviving
federation. It is a representative democracy, “in which majority rule is tempered by minority
rights protected by law”. The government is regulated by a system of checks and balances
defined by the U.S. Constitution, which serves as the country’s supreme legal document. For
2016, the U.S. ranked 21st on the Democracy Index (tied with Italy) and 18th on the Corruption
Perceptions Index.In the American federalist system, citizens are usually subject to three
levels of government: federal, state, and local. The local government’s duties are commonly
split between county and municipal governments. In almost all cases, executive and legislative
officials are elected by a plurality vote of citizens by district. There is no proportional
representation at the federal level, and it is rare at lower levels.The federal government
is composed of three branches: Legislative: The bicameral Congress, made
up of the Senate and the House of Representatives, makes federal law, declares war, approves
treaties, has the power of the purse, and has the power of impeachment, by which it
can remove sitting members of the government. Executive: The President is the commander-in-chief
of the military, can veto legislative bills before they become law (subject to Congressional
override), and appoints the members of the Cabinet (subject to Senate approval) and other
officers, who administer and enforce federal laws and policies.
Judicial: The Supreme Court and lower federal courts, whose judges are appointed by the
President with Senate approval, interpret laws and overturn those they find unconstitutional.The
House of Representatives has 435 voting members, each representing a congressional district
for a two-year term. House seats are apportioned among the states by population every tenth
year. At the 2010 census, seven states had the minimum of one representative, while California,
the most populous state, had 53. The District of Columbia and the five major U.S. territories
each have one member of Congress — these members are not allowed to vote.The Senate
has 100 members with each state having two senators, elected at-large to six-year terms;
one-third of Senate seats are up for election every other year. The District of Columbia
and the five major U.S. territories do not have senators. The President serves a four-year
term and may be elected to the office no more than twice. The President is not elected by
direct vote, but by an indirect electoral college system in which the determining votes
are apportioned to the states and the District of Columbia. The Supreme Court, led by the
Chief Justice of the United States, has nine members, who serve for life.The state governments
are structured in roughly similar fashion; Nebraska uniquely has a unicameral legislature.
The governor (chief executive) of each state is directly elected. Some state judges and
cabinet officers are appointed by the governors of the respective states, while others are
elected by popular vote. The original text of the Constitution establishes
the structure and responsibilities of the federal government and its relationship with
the individual states. Article One protects the right to the “great writ” of habeas corpus.
The Constitution has been amended 27 times; the first ten amendments, which make up the
Bill of Rights, and the Fourteenth Amendment form the central basis of Americans’ individual
rights. All laws and governmental procedures are subject to judicial review and any law
ruled by the courts to be in violation of the Constitution is voided. The principle
of judicial review, not explicitly mentioned in the Constitution, was established by the
Supreme Court in Marbury v. Madison (1803) in a decision handed down by Chief Justice
John Marshall.===Political divisions===The United States is a federal republic of
50 states, a federal district, five territories and several uninhabited island possessions.
The states and territories are the principal administrative districts in the country. These
are divided into subdivisions of counties and independent cities. The District of Columbia
is a federal district that contains the capital of the United States, Washington DC. The states
and the District of Columbia choose the President of the United States. Each state has presidential
electors equal to the number of their Representatives and Senators in Congress; the District of
Columbia has three (because of the 23rd Amendment). Territories of the United States such as Puerto
Rico do not have presidential electors, and so people in those territories cannot vote
for the president.Congressional Districts are reapportioned among the states following
each decennial Census of Population. Each state then draws single-member districts to
conform with the census apportionment. The total number of voting Representatives is
435. There are also 6 non-voting representatives who represent the District of Columbia and
the five major U.S. territories.The United States also observes tribal sovereignty of
the American Indian nations to a limited degree, as it does with the states’ sovereignty. American
Indians are U.S. citizens and tribal lands are subject to the jurisdiction of the U.S.
Congress and the federal courts. Like the states they have a great deal of autonomy,
but also like the states, tribes are not allowed to make war, engage in their own foreign relations,
or print and issue currency.Citizenship is granted at birth in all states, the District
of Columbia, and all major U.S. territories except American Samoa.===Parties and elections===The United States has operated under a two-party
system for most of its history. For elective offices at most levels, state-administered
primary elections choose the major party nominees for subsequent general elections. Since the
general election of 1856, the major parties have been the Democratic Party, founded in
1824, and the Republican Party, founded in 1854. Since the Civil War, only one third-party
presidential candidate—former president Theodore Roosevelt, running as a Progressive
in 1912—has won as much as 20% of the popular vote. The President and Vice-president are
elected through the Electoral College system.Within American political culture, the center-right
Republican Party is considered “conservative” and the center-left Democratic Party is considered
“liberal”. The states of the Northeast and West Coast and some of the Great Lakes states,
known as “blue states”, are relatively liberal. The “red states” of the South and parts of
the Great Plains and Rocky Mountains are relatively conservative.
Republican Donald Trump, the winner of the 2016 presidential election, is serving as
the 45th President of the United States. Leadership in the Senate includes Republican Vice President
Mike Pence, Republican President Pro Tempore Orrin Hatch, Majority Leader Mitch McConnell,
and Minority Leader Chuck Schumer. Leadership in the House includes Speaker of the House
Paul Ryan, Majority Leader Kevin McCarthy, and Minority Leader Nancy Pelosi.In the 115th
United States Congress, both the House of Representatives and the Senate are controlled
by the Republican Party. The Senate consists of 51 Republicans, and 47 Democrats with 2
Independents who caucus with the Democrats; the House consists of 241 Republicans and
194 Democrats. In state governorships, there are 33 Republicans, 16 Democrats, and 1 Independent.
Among the DC mayor and the 5 territorial governors, there are 2 Republicans, 1 Democrat, 1 New
Progressive, and 2 Independents.===Foreign relations===The United States has an established structure
of foreign relations. It is a permanent member of the United Nations Security Council and
New York City is home to the United Nations Headquarters. It is a member of the G7, G20,
and Organisation for Economic Co-operation and Development. Almost all countries have
embassies in Washington, D.C., and many have consulates around the country. Likewise, nearly
all nations host American diplomatic missions. However, Iran, North Korea, Bhutan, and the
Republic of China (Taiwan) do not have formal diplomatic relations with the United States
(although the U.S. still maintains relations with Taiwan and supplies it with military
equipment).The United States has a “Special Relationship” with the United Kingdom and
strong ties with Canada, Australia, New Zealand, the Philippines, Japan, South Korea, Israel,
and several European Union countries, including France, Italy, Germany, and Spain. It works
closely with fellow NATO members on military and security issues and with its neighbors
through the Organization of American States and free trade agreements such as the trilateral
North American Free Trade Agreement with Canada and Mexico. In 2008, the United States spent
a net $25.4 billion on official development assistance, the most in the world. As a share
of America’s large gross national income (GNI), however, the U.S. contribution of 0.18% ranked
last among 22 donor states. By contrast, private overseas giving by Americans is relatively
generous.The U.S. exercises full international defense authority and responsibility for three
sovereign nations through Compact of Free Association with Micronesia, the Marshall
Islands and Palau. These are Pacific island nations, once part of the U.S.-administered
Trust Territory of the Pacific Islands after World War II, which gained independence in
subsequent years.On October 25, 2017, Vice President Mike Pence announced at a In Defense
of Christians annual dinner meeting in Washington that the United States would stop funding
United Nations relief efforts, cases tackling the persecution of Christians in the Middle
East, but insisted that the U.S. would instead help and aid Christians directly through the
United States Agency for International Development. Pence said that he will be visiting the Middle
East in December and will meet with Israeli Prime Minister Benjamin Netanyahu and Palestinian
President Mahmoud Abbas to discuss peace agreements.===Government finance===Taxes in the United States are levied at the
federal, state, and local government levels. These include taxes on income, payroll, property,
sales, imports, estates and gifts, as well as various fees. Taxation in the United States
is based on citizenship, not residency. Both non-resident citizens and Green Card holders
living abroad are taxed on their income irrespective of where they live or where there income is
earned. It is the only country in the world, other than Eritrea, to do so.In 2010 taxes
collected by federal, state and municipal governments amounted to 24.8% of GDP. During
FY2012, the federal government collected approximately $2.45 trillion in tax revenue, up $147 billion
or 6% versus FY2011 revenues of $2.30 trillion. Primary receipt categories included individual
income taxes ($1,132B or 47%), Social Security/Social Insurance taxes ($845B or 35%), and corporate
taxes ($242B or 10%). Based on CBO estimates, under 2013 tax law the top 1% will be paying
the highest average tax rates since 1979, while other income groups will remain at historic
lows.U.S. taxation has historically been generally progressive, especially the federal income
taxes, though by most measures it became noticeably less progressive after 1980. It has sometimes
been described as among the most progressive in the developed world, but this characterization
is controversial. The highest 10% of income earners pay a majority of federal taxes, and
about half of all taxes. Payroll taxes for Social Security are a flat regressive tax,
with no tax charged on income above $118,500 (for 2015 and 2016) and no tax at all paid
on unearned income from things such as stocks and capital gains. The historic reasoning
for the regressive nature of the payroll tax is that entitlement programs have not been
viewed as welfare transfers. However, according to the Congressional Budget Office the net
effect of Social Security is that the benefit to tax ratio ranges from roughly 70% for the
top earnings quintile to about 170% for the lowest earning quintile, making the system
progressive.The top 10% paid 51.8% of total federal taxes in 2009, and the top 1%, with
13.4% of pre-tax national income, paid 22.3% of federal taxes. In 2013 the Tax Policy Center
projected total federal effective tax rates of 35.5% for the top 1%, 27.2% for the top
quintile, 13.8% for the middle quintile, and −2.7% for the bottom quintile. The incidence
of corporate income tax has been a matter of considerable ongoing controversy for decades.
State and local taxes vary widely, but are generally less progressive than federal taxes
as they rely heavily on broadly borne regressive sales and property taxes that yield less volatile
revenue streams, though their consideration does not eliminate the progressive nature
of overall taxation.During FY 2012, the federal government spent $3.54 trillion on a budget
or cash basis, down $60 billion or 1.7% vs. FY 2011 spending of $3.60 trillion. Major
categories of FY 2012 spending included: Medicare & Medicaid ($802B or 23% of spending), Social
Security ($768B or 22%), Defense Department ($670B or 19%), non-defense discretionary
($615B or 17%), other mandatory ($461B or 13%) and interest ($223B or 6%).The total
national debt of the United States in the United States was $18.527 trillion (106% of
the GDP) in 2014.===Military===The President holds the title of commander-in-chief
of the nation’s armed forces and appoints its leaders, the Secretary of Defense and
the Joint Chiefs of Staff. The United States Department of Defense administers the armed
forces, including the Army, Marine Corps, Navy, and Air Force. The Coast Guard is run
by the Department of Homeland Security in peacetime and by the Department of the Navy
during times of war. In 2008, the armed forces had 1.4 million personnel on active duty.
The Reserves and National Guard brought the total number of troops to 2.3 million. The
Department of Defense also employed about 700,000 civilians, not including contractors.Military
service is voluntary, though conscription may occur in wartime through the Selective
Service System. American forces can be rapidly deployed by the Air Force’s large fleet of
transport aircraft, the Navy’s 11 active aircraft carriers, and Marine expeditionary units at
sea with the Navy’s Atlantic and Pacific fleets. The military operates 865 bases and facilities
abroad, and maintains deployments greater than 100 active duty personnel in 25 foreign
countries.The military budget of the United States in 2011 was more than $700 billion,
41% of global military spending and equal to the next 14 largest national military expenditures
combined. At 4.7% of GDP, the rate was the second-highest among the top 15 military spenders,
after Saudi Arabia. U.S. defense spending as a percentage of GDP ranked 23rd globally
in 2012 according to the CIA. Defense’s share of U.S. spending has generally declined in
recent decades, from Cold War peaks of 14.2% of GDP in 1953 and 69.5% of federal outlays
in 1954 to 4.7% of GDP and 18.8% of federal outlays in 2011. The proposed base Department of Defense budget
for 2012, $553 billion, was a 4.2% increase over 2011; an additional $118 billion was
proposed for the military campaigns in Iraq and Afghanistan. The last American troops
serving in Iraq departed in December 2011; 4,484 service members were killed during the
Iraq War. Approximately 90,000 U.S. troops were serving in Afghanistan in April 2012;
by November 8, 2013 2,285 had been killed during the War in Afghanistan.==Law enforcement and crime==Law enforcement in the United States is primarily
the responsibility of local police and sheriff’s departments, with state police providing broader
services. The New York City Police Department (NYPD) is the largest in the country. Federal
agencies such as the Federal Bureau of Investigation (FBI) and the U.S. Marshals Service have specialized
duties, including protecting civil rights, national security and enforcing U.S. federal
courts’ rulings and federal laws. At the federal level and in almost every state, a legal system
operates on a common law. State courts conduct most criminal trials; federal courts handle
certain designated crimes as well as certain appeals from the state criminal courts. Plea
bargaining in the United States is very common; the vast majority of criminal cases in the
country are settled by plea bargain rather than jury trial.In 2015, there were 15,696
murders which was 1,532 more than in 2014, a 10.8% increase, the largest since 1971.
The murder rate in 2015 was 4.9 per 100,000 people. In 2016 the murder rate increased
by 8.6%, with 17,250 murders that year. The national clearance rate for homicides in 2015
was 64.1%, compared to 90% in 1965. In 2012 there were 4.7 murders per 100,000 persons
in the United States, a 54% decline from the modern peak of 10.2 in 1980. In 2001–2,
the United States had above-average levels of violent crime and particularly high levels
of gun violence compared to other developed nations. A cross-sectional analysis of the
World Health Organization Mortality Database from 2010 showed that United States “homicide
rates were 7.0 times higher than in other high-income countries, driven by a gun homicide
rate that was 25.2 times higher.” Gun ownership rights continue to be the subject of contentious
political debate. From 1980 through 2008 males represented 77%
of homicide victims and 90% of offenders. Blacks committed 52.5% of all homicides during
that span, at a rate almost eight times that of whites (“whites” includes most Hispanics),
and were victimized at a rate six times that of whites. Most homicides were intraracial,
with 93% of black victims killed by blacks and 84% of white victims killed by whites.
In 2012, Louisiana had the highest rate of murder and non-negligent manslaughter in the
U.S., and New Hampshire the lowest. The FBI’s Uniform Crime Reports estimates that there
were 3,246 violent and property crimes per 100,000 residents in 2012, for a total of
over 9 million total crimes.Capital punishment is sanctioned in the United States for certain
federal and military crimes, and used in 31 states. No executions took place from 1967
to 1977, owing in part to a U.S. Supreme Court ruling striking down arbitrary imposition
of the death penalty. In 1976, that Court ruled that, under appropriate circumstances,
capital punishment may constitutionally be imposed. Since the decision there have been
more than 1,300 executions, a majority of these taking place in three states: Texas,
Virginia, and Oklahoma. Meanwhile, several states have either abolished or struck down
death penalty laws. In 2015, the country had the fifth-highest number of executions in
the world, following China, Iran, Pakistan and Saudi Arabia.The United States has the
highest documented incarceration rate and largest prison population in the world. At
the start of 2008, more than 2.3 million people were incarcerated, more than one in every
100 adults. In December 2012, the combined U.S. adult correctional systems supervised
about 6,937,600 offenders. About 1 in every 35 adult residents in the United States was
under some form of correctional supervision in December 2012, the lowest rate observed
since 1997. The prison population has quadrupled since 1980, and state and local spending on
prisons and jails has grown three times as much as that spent on public education during
the same period. However, the imprisonment rate for all prisoners sentenced to more than
a year in state or federal facilities is 478 per 100,000 in 2013 and the rate for pre-trial/remand
prisoners is 153 per 100,000 residents in 2012. The country’s high rate of incarceration
is largely due to changes in sentencing guidelines and drug policies. According to the Federal
Bureau of Prisons, the majority of inmates held in federal prisons are convicted of drug
offenses. The privatization of prisons and prison services which began in the 1980s has
been a subject of debate. In 2013, Louisiana had the highest incarceration rate (1,082
per 100,000 people), and Maine the lowest (285 per 100,000 people). Among the U.S. territories,
the highest incarceration rate was in the U.S. Virgin Islands (542 per 100,000 people)
and the lowest was in Puerto Rico (313 per 100,000 people).==Economy==The United States has a capitalist mixed economy
which is fueled by abundant natural resources and high productivity. According to the International
Monetary Fund, the U.S. GDP of $16.8 trillion constitutes 24% of the gross world product
at market exchange rates and over 19% of the gross world product at purchasing power parity
(PPP).The nominal GDP of the U.S. is estimated to be $17.528 trillion as of 2014 From 1983
to 2008, U.S. real compounded annual GDP growth was 3.3%, compared to a 2.3% weighted average
for the rest of the G7. The country ranks ninth in the world in nominal GDP per capita
according to the United Nations (first in the Americas) and sixth in GDP per capita
at PPP. The U.S. dollar is the world’s primary reserve currency.The United States is the
largest importer of goods and second-largest exporter, though exports per capita are relatively
low. In 2010, the total U.S. trade deficit was $635 billion. Canada, China, Mexico, Japan,
and Germany are its top trading partners. In 2010, oil was the largest import commodity,
while transportation equipment was the country’s largest export. Japan is the largest foreign
holder of U.S. public debt. The largest holder of the U.S. debt are American entities, including
federal government accounts and the Federal Reserve, who hold the majority of the debt.In
2009, the private sector was estimated to constitute 86.4% of the economy, with federal
government activity accounting for 4.3% and state and local government activity (including
federal transfers) the remaining 9.3%. The number of employees at all levels of government
outnumber those in manufacturing by 1.7 to 1. While its economy has reached a postindustrial
level of development and its service sector constitutes 67.8% of GDP, the United States
remains an industrial power. The leading business field by gross business receipts is wholesale
and retail trade; by net income it is manufacturing. In the franchising business model, McDonald’s
and Subway are the two most recognized brands in the world. Coca-Cola is the most recognized
soft drink company in the world.Chemical products are the leading manufacturing field. The United
States is the largest producer of oil in the world, as well as its second-largest importer.
It is the world’s number one producer of electrical and nuclear energy, as well as liquid natural
gas, sulfur, phosphates, and salt. The National Mining Association provides data pertaining
to coal and minerals that include beryllium, copper, lead, magnesium, zinc, titanium and
others.Agriculture accounts for just under 1% of GDP, yet the United States is the world’s
top producer of corn and soybeans. The National Agricultural Statistics Service maintains
agricultural statistics for products that include peanuts, oats, rye, wheat, rice, cotton,
corn, barley, hay, sunflowers, and oilseeds. In addition, the United States Department
of Agriculture (USDA) provides livestock statistics regarding beef, poultry, pork, and dairy products.
The country is the primary developer and grower of genetically modified food, representing
half of the world’s biotech crops.Consumer spending comprises 68% of the U.S. economy
in 2015. In August 2010, the American labor force consisted of 154.1 million people. With
21.2 million people, government is the leading field of employment. The largest private employment
sector is health care and social assistance, with 16.4 million people. About 12% of workers
are unionized, compared to 30% in Western Europe. The World Bank ranks the United States
first in the ease of hiring and firing workers. The United States is ranked among the top
three in the Global Competitiveness Report as well. It has a smaller welfare state and
redistributes less income through government action than European nations tend to.The United
States is the only advanced economy that does not guarantee its workers paid vacation and
is one of just a few countries in the world without paid family leave as a legal right,
with the others being Papua New Guinea, Suriname and Liberia. While federal law does not require
sick leave, it is a common benefit for government workers and full-time employees at corporations.
74% of full-time American workers get paid sick leave, according to the Bureau of Labor
Statistics, although only 24% of part-time workers get the same benefits. In 2009, the
United States had the third-highest workforce productivity per person in the world, behind
Luxembourg and Norway. It was fourth in productivity per hour, behind those two countries and the
Netherlands.The 2008–2012 global recession significantly affected the United States,
with output still below potential according to the Congressional Budget Office. It brought
high unemployment (which has been decreasing but remains above pre-recession levels), along
with low consumer confidence, the continuing decline in home values and increase in foreclosures
and personal bankruptcies, an escalating federal debt crisis, inflation, and rising petroleum
and food prices.===Science and technology===The United States has been a leader in technological
innovation since the late 19th century and scientific research since the mid-20th century.
Methods for producing interchangeable parts were developed by the U.S. War Department
by the Federal Armories during the first half of the 19th century. This technology, along
with the establishment of a machine tool industry, enabled the U.S. to have large-scale manufacturing
of sewing machines, bicycles and other items in the late 19th century and became known
as the American system of manufacturing. Factory electrification in the early 20th century
and introduction of the assembly line and other labor-saving techniques created the
system called mass production.In 1876, Alexander Graham Bell was awarded the first U.S. patent
for the telephone. Thomas Edison’s research laboratory, one of the first of its kind,
developed the phonograph, the first long-lasting light bulb, and the first viable movie camera.
The latter led to emergence of the worldwide entertainment industry. In the early 20th
century, the automobile companies of Ransom E. Olds and Henry Ford popularized the assembly
line. The Wright brothers, in 1903, made the first sustained and controlled heavier-than-air
powered flight.The rise of fascism and Nazism in the 1920s and 1930s led many European scientists,
including Albert Einstein, Enrico Fermi, and John von Neumann, to immigrate to the United
States. During World War II, the Manhattan Project developed nuclear weapons, ushering
in the Atomic Age, while the Space Race produced rapid advances in rocketry, materials science,
and aeronautics.The invention of the transistor in the 1950s, a key active component in practically
all modern electronics, led to many technological developments and a significant expansion of
the U.S. technology industry. This, in turn, led to the establishment of many new technology
companies and regions around the country such as Silicon Valley in California. Advancements
by American microprocessor companies such as Advanced Micro Devices (AMD), and Intel
along with both computer software and hardware companies that include Adobe Systems, Apple
Inc., IBM, Microsoft, and Sun Microsystems created and popularized the personal computer.
The ARPANET was developed in the 1960s to meet Defense Department requirements, and
became the first of a series of networks which evolved into the Internet.These advancements
then lead to greater personalization of technology for individual use. As of 2013, 83.8% of American
households owned at least one computer, and 73.3% had high-speed Internet service. 91%
of Americans also own a mobile phone as of May 2013. The United States ranks highly with
regard to freedom of use of the internet.In the 21st century, approximately two-thirds
of research and development funding comes from the private sector. The United States
leads the world in scientific research papers and impact factor.===Income, poverty and wealth===Americans have the highest average household
and employee income among OECD nations, and in 2007 had the second-highest median household
income. According to the U.S. Census Bureau, median household income was $59,039 in 2016.
Accounting for 4.4% of the global population, Americans collectively possess 41.6% of the
world’s total wealth, and Americans make up roughly half of the world’s population of
millionaires. The Global Food Security Index ranked the U.S. number one for food affordability
and overall food security in March 2013. Americans on average have over twice as much living
space per dwelling and per person as European Union residents, and more than every EU nation.
For 2013 the United Nations Development Programme ranked the United States 5th among 187 countries
in its Human Development Index and 28th in its inequality-adjusted HDI (IHDI). After years of stagnant growth, in 2016, according
to the Census, median household income reached a record high after two consecutive years
of record growth, although income inequality remains at record highs with top fifth of
earners taking home more than half of all overall income. There has been a widening
gap between productivity and median incomes since the 1970s. However, the gap between
total compensation and productivity is not as wide because of increased employee benefits
such as health insurance. The rise in the share of total annual income received by the
top 1 percent, which has more than doubled from 9 percent in 1976 to 20 percent in 2011,
has significantly affected income inequality, leaving the United States with one of the
widest income distributions among OECD nations. According to a 2018 study by the OECD, the
United States has much higher income inequality and a larger percentage of low-income workers
than almost any other developed nation. This is largely because at-risk workers get almost
no government support and are further set back by a very weak collective bargaining
system. The top 1 percent of income-earners accounted for 52 percent of the income gains
from 2009 to 2015, where income is defined as market income excluding government transfers,
The extent and relevance of income inequality is a matter of debate.
Wealth, like income and taxes, is highly concentrated; the richest 10% of the adult population possess
72% of the country’s household wealth, while the bottom half claim only 2%. According to
a September 2017 report by the Federal Reserve, the top 1% controlled 38.6% of the country’s
wealth in 2016. Between June 2007 and November 2008 the global recession led to falling asset
prices around the world. Assets owned by Americans lost about a quarter of their value. Since
peaking in the second quarter of 2007, household wealth was down $14 trillion, but has since
increased $14 trillion over 2006 levels. At the end of 2014, household debt amounted to
$11.8 trillion, down from $13.8 trillion at the end of 2008.There were about 578,424 sheltered
and unsheltered homeless persons in the U.S. in January 2014, with almost two-thirds staying
in an emergency shelter or transitional housing program. In 2011 16.7 million children lived
in food-insecure households, about 35% more than 2007 levels, though only 1.1% of U.S.
children, or 845,000, saw reduced food intake or disrupted eating patterns at some point
during the year, and most cases were not chronic. According to a 2014 report by the Census Bureau,
one in five young adults lives in poverty, up from one in seven in 1980. As of September
2017, 40 million people, roughly 12.7% of the U.S. population, were living in poverty,
with 18.5 million of those living in deep poverty (a family income below one-half of
the poverty threshold). In 2016, 13.3 million children were living in poverty, which made
up 32.6% of the impoverished population.In 2017, the region with the lowest poverty rate
was New Hampshire (7.3%), and the region with the highest poverty rate was American Samoa
(65%). Among the states, the highest poverty rate was in Mississippi (21.9%). According
to the UN, around five million people in the U.S. live in “third world” conditions.==Infrastructure=====
Transportation===Personal transportation is dominated by automobiles,
which operate on a network of 4 million miles (6.4 million kilometers) of public roads,
including one of the world’s longest highway systems at 57,000 mi (91,700 km). The world’s
second-largest automobile market, the United States has the highest rate of per-capita
vehicle ownership in the world, with 765 vehicles per 1,000 Americans (1996). About 40% of personal
vehicles are vans, SUVs, or light trucks. The average American adult (accounting for
all drivers and non-drivers) spends 55 minutes driving every day, traveling 29 miles (47
km). In 2017, there were 255,009,283 motor vehicles—including cars, vans, buses, freight,
and other trucks, but excluding motorcycles and other two-wheelers—or 910 vehicles per
1,000 people. Mass transit accounts for 9% of total U.S.
work trips. Transport of goods by rail is extensive, though relatively low numbers of
passengers (approximately 31 million annually) use intercity rail to travel, partly because
of the low population density throughout much of the U.S. interior. However, ridership on
Amtrak, the national intercity passenger rail system, grew by almost 37% between 2000 and
2010. Also, light rail development has increased in recent years. Bicycle usage for work commutes
is minimal.The civil airline industry is entirely privately owned and has been largely deregulated
since 1978, while most major airports are publicly owned. The
three largest airlines in the world by passengers carried are U.S.-based; American Airlines
is number one after its 2013 acquisition by US Airways. Of the world’s 50 busiest passenger
airports, 16 are in the United States, including the busiest, Hartsfield–Jackson Atlanta
International Airport, and the fourth-busiest, O’Hare International Airport in Chicago. In
the aftermath of the 9/11 attacks of 2001, the Transportation Security Administration
was created to police airports and commercial airliners.===Energy===The United States energy market is about 29,000
terawatt hours per year. Energy consumption per capita is 7.8 tons (7076 kg) of oil equivalent
per year, the 10th-highest rate in the world. In 2005, 40% of this energy came from petroleum,
23% from coal, and 22% from natural gas. The remainder was supplied by nuclear power and
renewable energy sources. The United States is the world’s largest consumer of petroleum.
The United States has 27% of global coal reserves. It is the world’s largest producer of natural
gas and crude oil.For decades, nuclear power has played a limited role relative to many
other developed countries, in part because of public perception in the wake of a 1979
accident. In 2007, several applications for new nuclear plants were filed.===Water supply and sanitation===Issues that affect water supply in the United
States include droughts in the West, water scarcity, pollution, a backlog of investment,
concerns about the affordability of water for the poorest, and a rapidly retiring workforce.
Increased variability and intensity of rainfall as a result of climate change is expected
to produce both more severe droughts and flooding, with potentially serious consequences for
water supply and for pollution from combined sewer overflows.==Culture==The United States is home to many cultures
and a wide variety of ethnic groups, traditions, and values. Aside from the Native American,
Native Hawaiian, and Native Alaskan populations, nearly all Americans or their ancestors settled
or immigrated within the past five centuries. Mainstream American culture is a Western culture
largely derived from the traditions of European immigrants with influences from many other
sources, such as traditions brought by slaves from Africa. More recent immigration from
Asia and especially Latin America has added to a cultural mix that has been described
as both a homogenizing melting pot, and a heterogeneous salad bowl in which immigrants
and their descendants retain distinctive cultural characteristics.Core American culture was
established by Protestant British colonists and shaped by the frontier settlement process,
with the traits derived passed down to descendants and transmitted to immigrants through assimilation.
Americans have traditionally been characterized by a strong work ethic, competitiveness, and
individualism, as well as a unifying belief in an “American creed” emphasizing liberty,
equality, private property, democracy, rule of law, and a preference for limited government.
Americans are extremely charitable by global standards. According to a 2006 British study,
Americans gave 1.67% of GDP to charity, more than any other nation studied, more than twice
the second place British figure of 0.73%, and around twelve times the French figure
of 0.14%.The American Dream, or the perception that Americans enjoy high social mobility,
plays a key role in attracting immigrants. Whether this perception is realistic has been
a topic of debate. While mainstream culture holds that the United States is a classless
society, scholars identify significant differences between the country’s social classes, affecting
socialization, language, and values. Americans’ self-images, social viewpoints, and cultural
expectations are associated with their occupations to an unusually close degree. While Americans
tend greatly to value socioeconomic achievement, being ordinary or average is generally seen
as a positive attribute.===Food===Mainstream American cuisine is similar to
that in other Western countries. Wheat is the primary cereal grain with about three-quarters
of grain products made of wheat flour and many dishes use indigenous ingredients, such
as turkey, venison, potatoes, sweet potatoes, corn, squash, and maple syrup which were consumed
by Native Americans and early European settlers. These homegrown foods are part of a shared
national menu on one of America’s most popular holidays; Thanksgiving, when some Americans
make traditional foods to celebrate the occasion. Characteristic dishes such as apple pie, fried
chicken, pizza, hamburgers, and hot dogs derive from the recipes of various immigrants. French
fries, Mexican dishes such as burritos and tacos, and pasta dishes freely adapted from
Italian sources are widely consumed. Americans drink three times as much coffee as tea. Marketing
by U.S. industries is largely responsible for making orange juice and milk ubiquitous
breakfast beverages.American eating habits owe a great deal to that of their British
culinary roots with some variations. Although American lands could grow newer vegetables
that Britain could not, most colonists would not eat these new foods until accepted by
Europeans. Over time American foods changed to a point that food critic, John L. Hess
stated in 1972: “Our founding fathers were as far superior to our present political leaders
in the quality of their food as they were in the quality of their prose and intelligence”.The
American fast food industry, the world’s largest, pioneered the drive-through format in the
1940s. Fast food consumption has sparked health concerns. During the 1980s and 1990s, Americans’
caloric intake rose 24%; frequent dining at fast food outlets is associated with what
public health officials call the American “obesity epidemic”. Highly sweetened soft
drinks are widely popular, and sugared beverages account for nine percent of American caloric
intake.===Literature, philosophy, and visual art
===In the 18th and early 19th centuries, American
art and literature took most of its cues from Europe. Writers such as Nathaniel Hawthorne,
Edgar Allan Poe, and Henry David Thoreau established a distinctive American literary voice by the
middle of the 19th century. Mark Twain and poet Walt Whitman were major figures in the
century’s second half; Emily Dickinson, virtually unknown during her lifetime, is now recognized
as an essential American poet. A work seen as capturing fundamental aspects of the national
experience and character—such as Herman Melville’s Moby-Dick (1851), Twain’s The Adventures
of Huckleberry Finn (1885), F. Scott Fitzgerald’s The Great Gatsby (1925) and Harper Lee’s To
Kill a Mockingbird (1960)—may be dubbed the “Great American Novel”.Twelve U.S. citizens
have won the Nobel Prize in Literature, most recently Bob Dylan in 2016. William Faulkner,
Ernest Hemingway and John Steinbeck are often named among the most influential writers of
the 20th century. Popular literary genres such as the Western and hardboiled crime fiction
developed in the United States. The Beat Generation writers opened up new literary approaches,
as have postmodernist authors such as John Barth, Thomas Pynchon, and Don DeLillo.The
transcendentalists, led by Thoreau and Ralph Waldo Emerson, established the first major
American philosophical movement. After the Civil War, Charles Sanders Peirce and then
William James and John Dewey were leaders in the development of pragmatism. In the 20th
century, the work of W. V. O. Quine and Richard Rorty, and later Noam Chomsky, brought analytic
philosophy to the fore of American philosophical academia. John Rawls and Robert Nozick led
a revival of political philosophy, and Martha Nussbaum is its most important figure today.
Cornel West and Judith Butler have led a continental tradition in American philosophical academia.
Chicago school economists like Milton Friedman, James M. Buchanan, and Thomas Sowell have
affected various fields in social and political philosophy.In the visual arts, the Hudson
River School was a mid-19th-century movement in the tradition of European naturalism. The
realist paintings of Thomas Eakins are now widely celebrated. The 1913 Armory Show in
New York City, an exhibition of European modernist art, shocked the public and transformed the
U.S. art scene. Georgia O’Keeffe, Marsden Hartley, and others experimented with new,
individualistic styles. Major artistic movements such as the abstract expressionism of Jackson
Pollock and Willem de Kooning and the pop art of Andy Warhol and Roy Lichtenstein developed
largely in the United States. The tide of modernism and then postmodernism has brought
fame to American architects such as Frank Lloyd Wright, Philip Johnson, and Frank Gehry.
Americans have long been important in the modern artistic medium of photography, with
major photographers including Alfred Stieglitz, Edward Steichen, and Ansel Adams. One of the first major promoters of American
theater was impresario P. T. Barnum, who began operating a lower Manhattan entertainment
complex in 1841. The team of Harrigan and Hart produced a series of popular musical
comedies in New York starting in the late 1870s. In the 20th century, the modern musical
form emerged on Broadway; the songs of musical theater composers such as Irving Berlin, Cole
Porter, and Stephen Sondheim have become pop standards. Playwright Eugene O’Neill won the
Nobel literature prize in 1936; other acclaimed U.S. dramatists include multiple Pulitzer
Prize winners Tennessee Williams, Edward Albee, and August Wilson.Choreographers Isadora Duncan
and Martha Graham helped create modern dance, while George Balanchine and Jerome Robbins
were leaders in 20th-century ballet.===Music===Although little known at the time, Charles
Ives’s work of the 1910s established him as the first major U.S. composer in the classical
tradition, while experimentalists such as Henry Cowell and John Cage created a distinctive
American approach to classical composition. Aaron Copland and George Gershwin developed
a new synthesis of popular and classical music. The rhythmic and lyrical styles of African-American
music have deeply influenced American music at large, distinguishing it from European
and African traditions. Elements from folk idioms such as the blues and what is now known
as old-time music were adopted and transformed into popular genres with global audiences.
Jazz was developed by innovators such as Louis Armstrong and Duke Ellington early in the
20th century. Country music developed in the 1920s, and rhythm and blues in the 1940s.Elvis
Presley and Chuck Berry were among the mid-1950s pioneers of rock and roll. Rock bands such
as Metallica, the Eagles, and Aerosmith are among the highest grossing in worldwide sales.
In the 1960s, Bob Dylan emerged from the folk revival to become one of America’s most celebrated
songwriters and James Brown led the development of funk.
More recent American creations include hip hop and house music. American pop stars such
as Elvis Presley, Michael Jackson, and Madonna have become global celebrities, as have contemporary
musical artists such as Taylor Swift, Britney Spears, Katy Perry, Beyoncé, Jay-Z, Eminem
and Kanye West.===Cinema===Hollywood, a northern district of Los Angeles,
California, is one of the leaders in motion picture production. The world’s first commercial
motion picture exhibition was given in New York City in 1894, using Thomas Edison’s Kinetoscope.
The next year saw the first commercial screening of a projected film, also in New York, and
the United States was in the forefront of sound film’s development in the following
decades. Since the early 20th century, the U.S. film industry has largely been based
in and around Hollywood, although in the 21st century an increasing number of films are
not made there, and film companies have been subject to the forces of globalization.Director
D. W. Griffith, the top American filmmaker during the silent film period, was central
to the development of film grammar, and producer/entrepreneur Walt Disney was a leader in both animated
film and movie merchandising. Directors such as John Ford redefined the image of the American
Old West and history, and, like others such as John Huston, broadened the possibilities
of cinema with location shooting, with great influence on subsequent directors. The industry
enjoyed its golden years, in what is commonly referred to as the “Golden Age of Hollywood”,
from the early sound period until the early 1960s, with screen actors such as John Wayne
and Marilyn Monroe becoming iconic figures. In the 1970s, film directors such as Martin
Scorsese, Francis Ford Coppola and Robert Altman were a vital component in what became
known as “New Hollywood” or the “Hollywood Renaissance”, grittier films influenced by
French and Italian realist pictures of the post-war period. Since, directors such as
Steven Spielberg, George Lucas and James Cameron have gained renown for their blockbuster films,
often characterized by high production costs, and in return, high earnings at the box office,
with Cameron’s Avatar (2009) earning more than $2 billion.Notable films topping the
American Film Institute’s AFI 100 list include Orson Welles’s Citizen Kane (1941), which
is frequently cited as the greatest film of all time, Casablanca (1942), The Godfather
(1972), Gone with the Wind (1939), Lawrence of Arabia (1962), The Wizard of Oz (1939),
The Graduate (1967), On the Waterfront (1954), Schindler’s List (1993), Singin’ in the Rain
(1952), It’s a Wonderful Life (1946) and Sunset Boulevard (1950). The Academy Awards, popularly
known as the Oscars, have been held annually by the Academy of Motion Picture Arts and
Sciences since 1929, and the Golden Globe Awards have been held annually since January
1944.===Sports===American football is by several measures the
most popular spectator sport; the National Football League (NFL) has the highest average
attendance of any sports league in the world, and the Super Bowl is watched by millions
globally. Baseball has been regarded as the U.S. national sport since the late 19th century,
with Major League Baseball (MLB) being the top league. Basketball and ice hockey are
the country’s next two leading professional team sports, with the top leagues being the
National Basketball Association (NBA) and the National Hockey League (NHL). These four
major sports, when played professionally, each occupy a season at different but overlapping,
times of the year. College football and basketball attract large audiences. In soccer, the country
hosted the 1994 FIFA World Cup, the men’s national soccer team qualified for ten World
Cups and the women’s team has won the FIFA Women’s World Cup three times; Major League
Soccer is the sport’s highest league in the United States (featuring 19 American and 3
Canadian teams). The market for professional sports in the
United States is roughly $69 billion, roughly 50% larger than that of all of Europe, the
Middle East, and Africa combined. Eight Olympic Games have taken place in the
United States (2028 Summer Olympics will mark the ninth time). As of 2017, the United States
has won 2,522 medals at the Summer Olympic Games, more than any other country, and 305
in the Winter Olympic Games, the second most behind Norway.
While most major U.S. sports such as baseball and American football have evolved out of
European practices, basketball, volleyball, skateboarding, and snowboarding are American
inventions, some of which have become popular worldwide. Lacrosse and surfing arose from
Native American and Native Hawaiian activities that predate Western contact. The most watched
individual sports are golf and auto racing, particularly NASCAR. Rugby union is considered
the fastest growing sport in the U.S., with registered players, numbered at 115,000+ and
a further 1.2 million participants.===Mass media===The four major broadcasters in the U.S. are
the National Broadcasting Company (NBC), Columbia Broadcasting System (CBS), the American Broadcasting
Company (ABC), and Fox. The four major broadcast television networks are all commercial entities.
Cable television offers hundreds of channels catering to a variety of niches. Americans
listen to radio programming, also largely commercial, on average just over two-and-a-half
hours a day.In 1998, the number of U.S. commercial radio stations had grown to 4,793 AM stations
and 5,662 FM stations. In addition, there are 1,460 public radio stations. Most of these
stations are run by universities and public authorities for educational purposes and are
financed by public or private funds, subscriptions, and corporate underwriting. Much public-radio
broadcasting is supplied by NPR (formerly National Public Radio). NPR was incorporated
in February 1970 under the Public Broadcasting Act of 1967; its television counterpart, PBS,
was also created by the same legislation. (NPR and PBS are operated separately from
each other.) As of September 30, 2014, there are 15,433 licensed full-power radio stations
in the U.S. according to the U.S. Federal Communications Commission (FCC).Well-known
newspapers include The Wall Street Journal, The New York Times, and USA Today. Although
the cost of publishing has increased over the years, the price of newspapers has generally
remained low, forcing newspapers to rely more on advertising revenue and on articles provided
by a major wire service, such as the Associated Press or Reuters, for their national and world
coverage. With very few exceptions, all the newspapers in the U.S. are privately owned,
either by large chains such as Gannett or McClatchy, which own dozens or even hundreds
of newspapers; by small chains that own a handful of papers; or in a situation that
is increasingly rare, by individuals or families. Major cities often have “alternative weeklies”
to complement the mainstream daily papers, for example, New York City’s The Village Voice
or Los Angeles’ LA Weekly, to name two of the best-known. Major cities may also support
a local business journal, trade papers relating to local industries, and papers for local
ethnic and social groups. Early versions of the American newspaper comic strip and the
American comic book began appearing in the 19th century. In 1938, Superman, the comic
book superhero of DC Comics, developed into an American icon. Aside from web portals and
search engines, the most popular websites are Facebook, YouTube, Wikipedia, Yahoo!,
eBay, Amazon, and Twitter.More than 800 publications are produced in Spanish, the second most commonly
used language in the United States behind English.==See also==Index of United States-related articles
Lists of U.S. state topics Outline of the United States==Notes

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