United States

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United States of America
Flag Great Seal
Motto: E Pluribus Unum ("Out Of Many, One") (traditional) In God We Trust (1956 to date)
Anthem: The Star-Spangled Banner
Capital	Washington, D.C. 38°53′N 77°02′W
Largest city	New York City
Official languages	None at federal level (English de facto)
Government	Federal constitutional republic
- President	George W. Bush (R)
- Vice President	Dick Cheney (R)
- House speaker	Nancy Pelosi (D)
- Chief Justice	John G. Roberts
Independence	from Great Britain
- Declared	July 4, 1776
Area
- Total	9,631,420 km² (3rd1) 3,718,695 sq mi
- Water (%)	4.87
Population
- 2007 estimate	301,148,000[1] (3rd)
- 2000 census	281,421,906
- Density	31/km² (172nd) 80/sq mi
GDP (PPP)	2006 estimate
- Total	$13.049 trillion (1st)
- Per capita	$43,555 (3rd)
GDP (nominal)	2006 estimate
- Total	$13.3 trillion (1st)
- Per capita	$44,333 (8th)
HDI  (2004)	0.948 (high) (8th)
Currency	United States dollar ($) (USD)
Time zone	(UTC-5 to -10)
- Summer (DST)	(UTC-4 to -10)
Internet TLD	.us .gov .edu .mil
Calling code	+1
1 Sometimes listed as 4th; the rank is disputed with China.

The United States of America (often shortened to the United States, USA, U.S. or colloquially America) is a country of the western hemisphere, comprising fifty states and numerous territories. Forty-eight contiguous states lie in central North America between the Pacific and Atlantic Oceans, bound on land by Canada to the north and Mexico to the south; Alaska is in the northwest of the continent with Canada to its east, and Hawaii is in the mid-Pacific.^[2] The United States is a federal constitutional republic; Washington, its capital, is coextensive with the District of Columbia (D.C.), the federal capital district.^[3]

At over 3.7 million square miles (over 9.6 million km²) and with over 300 million people, the United States is the third largest country by both total area and population. ^[4] With a gross domestic product (GDP) of over $13 trillion, the U.S. has the largest national economy in the world.^[5] GDP per capita ranks first among the larger economies of the world, and third or eighth overall, depending on the measurement. The product of large-scale historical immigration and home to a complex social structure^[6] as well as a wide array of household arrangements,^[7] the U.S. is one of the world's most ethnically and socially diverse nations.^[8]

The nation was founded by thirteen colonies declaring their independence from Great Britain on July 4, 1776 and ratifying the Articles of Confederation, on March 1, 1781. It adopted the current constitution on September 17, 1787. The country greatly expanded in territory throughout the 19th century acquiring lands from France and Mexico. With the collapse of the Soviet Union in 1991, it became the world's sole remaining superpower. The United States continues to exert dominant economic, political, cultural, and military influence around the globe.^[9]

Contents 1 Etymology 2 Geography 2.1 Terrain 2.2 Climate 3 History 3.1 Native Americans 3.2 European colonization 3.3 American Revolution and Early Republic 3.4 Westward expansion 3.5 Civil War 3.6 Reconstruction and industrialization 3.7 World Wars I and II 3.8 Cold War and civil rights 3.9 War on Terrorism 4 Government and politics 4.1 Political system 4.2 Foreign relations and military 5 Administrative divisions 6 Environment 7 Economy 7.1 General situation 7.2 Innovation 7.3 Transportation 8 Demographics 8.1 General situation 8.2 Indigenous peoples 8.3 Languages 8.4 Largest cities 8.5 Religion 8.6 Education 8.7 Health 9 Culture 9.1 Cuisine 9.2 Visual arts 9.3 Literature 9.4 Music 9.5 Cinema 9.6 Sports 10 See also 11 Notes 12 Further reading 13 External links 14 Navigation

Etymology

Common names and abbreviations of the United States of America include the United States, the U.S., the U.S.A., the USA, the U.S. of A., the States (informal), and America. The earliest known use of the name America is attributed to the German cartographer Martin Waldseemüller who, while working in Saint-Dié-des-Vosges in 1507, created a globe and a large map showing North and South America.^[10] Although the origin of the name is uncertain,^[11] the most widely held belief is that expressed in an accompanying book^{[citation needed]}, Cosmographiae Introductio, which explains it as the feminine version of the Latin name of Italian explorer Amerigo Vespucci (Americus Vespucius); in Latin, the other continents' names were all feminine. Vespucci theorized, correctly, that Christopher Columbus, on reaching islands in the Caribbean Sea in 1492, had come not to India but to a "New World".

The Americas were also known as Columbia, after Columbus, prompting the name District of Columbia for the land set aside as the U.S. capital. Columbia remained a popular name for the United States until the early 20th century, when it fell into relative disuse; it is still used poetically, and appears in various names and titles.^[12][13][14] One female personification of the country is called Columbia; she is similar to Britannia.^[15] Columbus Day is a holiday in the United States, and other countries in the Americas, commemorating Columbus' October 1492 landing.

The phrase "united States of America" [sic] was first used officially in the Declaration of Independence, adopted on July 4, 1776. On November 15, 1777, the Second Continental Congress adopted the Articles of Confederation, the first of which stated "The Stile [sic] of this Confederacy shall be 'The United States of America.'" The name was originally proposed by Thomas Paine.

The most common adjectival and demonymic form for the United States is American; this term is used for U.S. citizens living abroad, and for cultural characteristics ("American language," "American sports") and is rarely used to refer to people not connected to the U.S.

Geography

Main article: Geography of the United States

The United States is the world's third largest country by total area, and the third largest by land area alone, after Russia and Canada.^[16] Its contiguous portion is bounded by the North Atlantic Ocean to the east, the North Pacific Ocean to the west, Mexico and the Gulf of Mexico to the south, and Canada to the north. Alaska (the largest state in area) is bound by Canada to its east, with the Pacific Ocean to its south, the Arctic Ocean to its north, and the Bering Strait to the west. The state of Hawaii occupies an archipelago in the Pacific Ocean, southwest of the North American mainland.

Deciduous vegetation and grasslands prevail in the eastern U.S., transitioning to prairies, boreal forests, and the Rocky Mountains in the west, and deserts in the southwest. In the northeast, the coasts of the Great Lakes and Atlantic seaboard host much of the country's population.

Terrain

The U.S. has an extremely varied geography, particularly in the West. The eastern seaboard has a coastal plain which is widest in the south and narrows in the north. The coastal plain does not exist north of New Jersey, although there are glacial outwash plains on Long Island, Martha's Vineyard, and Nantucket. In the extreme southeast, Florida is home to the ecologically unique Everglades.

Beyond the coastal plain, the rolling hills of the Piedmont region end at the Appalachian Mountains, which rise above 6,000 feet (1,830 m) in North Carolina, Tennessee, and New Hampshire. From the west slope of the Appalachians, the Interior Plains of the Midwest are relatively flat and are the location of the Great Lakes as well as the Mississippi-Missouri River, the world's 4th longest river system.^[17] West of the Mississippi River, the Interior Plains slope uphill and blend into the vast and often featureless Great Plains.

The abrupt rise of the Rocky Mountains, at the western edge of the Great Plains, extends north to south across the continental U.S., reaching altitudes over 14,000 feet (4,270 m) in Colorado.^[18] In the past, the Rocky Mountains had a higher level of volcanic activity; nowadays, the range only has one area of volcanism (the super-volcano underlying Yellowstone National Park in Wyoming, possibly the world's largest volcano), although rift volcanism has occurred relatively recently near the Rockies' southern margin in New Mexico.^[19]

Alaska has numerous mountain ranges; including Mount McKinley (Denali), the highest peak in North America. Numerous volcanoes can be found throughout the Alexander and Aleutian Islands extending south and west of the Alaskan mainland.

The Hawaiian Islands are tropical, volcanic islands extending over 1,500 miles (2,400 km), and consisting of six larger islands and another dozen smaller ones that are inhabited.

Climate

Due to its large size and wide range of geographic features, the United States contains examples of nearly every global climate. The climate is temperate in most areas, tropical in Hawaii and southern Florida, polar in Alaska, semiarid in the Great Plains west of the 100th meridian, deserts in the Southwest, Mediterranean in coastal California and arid in the Great Basin. Its comparatively generous climate contributed (in part) to the country's rise as a world power, with infrequent severe drought in the major agricultural regions, a general lack of widespread flooding, and a mainly temperate climate that receives adequate precipitation.

History

Main article: History of the United States

Native Americans

Before the European colonization of the Americas, a process that began at the end of the 15th century, the present-day continental U.S. was inhabited exclusively by various indigenous peoples, including Alaskan natives, who migrated to the continent over a period that may have begun 35,000 years ago and may have ended as recently as 11,000 years ago.^[20]

European colonization

The first confirmed European landing in present-day United States territory was by Christopher Columbus, who visited Puerto Rico on November 19, 1493, during his second voyage. The settlement of San Juan, Puerto Rico was founded on August 8, 1508 by Juan Ponce de León. Ponce de León went on to become the first confirmed European to arrive in what would become the continental United States when he landed in Florida on April 2, 1513. Florida was home to the earliest European colonies on the mainland; these were Pensacola (founded by Tristán de Luna y Arellano in 1559), Fort Caroline (by René Goulaine de Laudonnière in 1564), and St. Augustine (by Pedro Menéndez de Avilés in 1565), the last of which is the only one to have been continuously inhabited since its foundation.

French colonists explored and settled parts of the Great Lakes and Mississippi Valley regions, while the Spanish colonized much of what became the Southwestern United States, along with Florida. The first successful English settlement was at Jamestown, Virginia, in 1607, followed in 1620 by the Pilgrims' landing at Plymouth, Massachusetts, then the arrival of the colony of Massachusetts Bay, started by the Puritans. In 1609 and 1617, respectively, the Dutch settled in part of what became New York and New Jersey. In 1638, the Swedes founded New Sweden, in part of what became Delaware, New Jersey, and Pennsylvania after passing through Dutch hands. Throughout the 17th and early 18th centuries, England (and later Great Britain) established new colonies, took over Dutch colonies, and split others. With the division of the Carolinas in 1729, and the colonization of Georgia in 1732, the British colonies in North America—excluding present-day Canada, and the loyal colonies of East and West Florida—numbered thirteen.

American Revolution and Early Republic

Main articles: American Revolution and American Revolutionary War

Tensions between American colonials and the British during the revolutionary period of the 1760s and 1770s led to open military conflict in 1775. George Washington commanded the Continental Army during the American Revolutionary War (1775–1783) as the Second Continental Congress adopted the Declaration of Independence on July 4, 1776. The Congress had been formed to confront British actions and created the Continental Army, but it did not have the authority to levy taxes or make federal laws. In 1777, the Congress adopted the Articles of Confederation, uniting the states under a weak federal government, which operated from 1781 until 1788. Dissatisfaction with the strength of the national government led to a constitutional convention in 1787. By June of 1788, enough states had ratified the United States Constitution to establish the new government, which took office in 1789. The Constitution, which strengthened the union and the federal government, has since remained the supreme law of the land.^[21]

Westward expansion

Main article: Manifest Destiny

From 1803 to 1848, the size of the new nation nearly tripled as settlers (many embracing the concept of Manifest Destiny as an inevitable consequence of American exceptionalism) pushed beyond national boundaries even before the Louisiana Purchase.^[22] The expansion was tempered somewhat by the stalemate in the War of 1812, but it was subsequently reinvigorated by victory in the Mexican-American War in 1848.

Between 1830–1880 up to 40 million American Buffalo were slaughtered for skins and meat, and to aid railway expansion. The expansion of the railways reduced transit times for both goods and people, made westward expansion less arduous for the pioneers, and increased conflicts with the Indians over the land and its uses. The loss of the buffalo, a primary resource for the plains Indians, added to the pressures on native cultures and individuals for survival.

Civil War

Main article: American Civil War

As new territories were being incorporated, the nation was divided over the issue of states' rights, the role of the federal government, and—by the 1820s—the expansion of slavery, which had been legal in all thirteen colonies but was rarer in the north, where it was abolished by 1804. The Northern states were opposed to the expansion of slavery whereas the Southern states saw the opposition as an attack on their way of life, since their economy was dependent on slave labor. The failure to permanently resolve these issues led to the Civil War, following the secession of many slave states in the South to form the Confederate States of America after the 1860 election of Abraham Lincoln.^[23] The 1865 Union victory in the Civil War effectively ended slavery and settled the question of whether a state had the right to secede. The event was a major turning point in American history and resulted in an increase in federal power.^[24]

Reconstruction and industrialization

Main article: Reconstruction

After the Civil War, an unprecedented influx of immigrants, who helped to provide labor for American industry and create diverse communities in undeveloped areas—together with high tariff protections, national infrastructure building, and national banking regulations—hastened the country's rise to international power. The growing power of the United States enabled it to acquire new territories, including the annexation of Puerto Rico and the Philippines after victory in the Spanish-American War,^[25] which marked the debut of the United States as a major world power.

World Wars I and II

Main articles: World War I and World War II

At the outbreak of World War I in 1914, the United States remained neutral. In 1917, however, the United States joined the Allied Powers, helping to turn the tide against the Central Powers. For historical reasons, American sympathies were very much in favor of the British and French, even though a sizable number of citizens, mostly Irish and German, were opposed to intervention.^[26] After the war, the Senate did not ratify the Treaty of Versailles because of a fear that it would pull the United States into European affairs. Instead, the country continued to pursue its policy of unilateralism that bordered at times on isolationism.^[27]

During most of the 1920s, the United States enjoyed a period of unbalanced prosperity as farm prices fell and industrial profits grew. A rise in debt and an inflated stock market culminated in a crash in 1929, and combined with the Dust Bowl, triggered the Great Depression. After his election as President in 1932, Franklin Delano Roosevelt instituted his plan for a New Deal, which increased government intervention in the economy in response to the Great Depression.

The nation did not fully recover until 1941, when the United States was driven to join the Allies against the Axis Powers after a surprise attack on Pearl Harbor by Japan. World War II was the costliest war in economic terms in American history,^[28][29] but it helped to pull the economy out of depression because the required production of military material provided much-needed jobs, and women entered the workforce in large numbers for the first time. During this war, scientists working for the United States federal government succeeded in producing nuclear weapons, making the United States the world's first nuclear power. Toward the end of World War II, after the end of World War II in Europe, the United States dropped atomic bombs on Hiroshima and Nagasaki, Japan. The Hiroshima and Nagasaki bombs were the second and third nuclear devices detonated and the only ones ever employed as weapons.

Japan surrendered soon after, on 2 September 1945, which ended World War II.^[30]

Cold War and civil rights

Main articles: Cold War and American Civil Rights Movement (1955-1968)

After World War II, the United States and the Soviet Union became superpowers in an era of ideological rivalry dubbed the Cold War. The United States officially promoted liberal democracy and capitalism, while the Soviet Union officially promoted communism and a centrally planned economy. Both sides sometimes supported politically convenient oppressive regimes. The result was a series of proxy wars, including the Korean War, the Vietnam War, the tense nuclear showdown of the Cuban Missile Crisis, and the Soviet war in Afghanistan.

The perception that the United States was losing the space race spurred government efforts to raise proficiency in mathematics and science in schools^[31] and led to President John F. Kennedy's call for the United States to land "a man on the moon" by the end of the 1960s, which was realized in 1969.^[31]

Meanwhile, American society experienced a period of sustained economic expansion. At the same time, discrimination across the United States, especially in the South, was increasingly challenged by a growing civil-rights movement headed by prominent African Americans such as Martin Luther King, Jr., which led to the abolition of the Jim Crow laws in the South.^[32]

After the fall of the Soviet Union in 1991, the United States continued to intervene in overseas military conflicts such as the Gulf War. It remains the world's only superpower.

War on Terrorism

Main articles: September 11, 2001 attacks and War on Terror

After the terrorist attacks of September 11, 2001, which killed nearly 3,000 people, U.S. foreign policy focused on the global threat of terrorism, and the government under President George W. Bush began a series of military and legal operations termed the War on Terror. It began with military operations in Afghanistan which led to the removal of the Taliban from power and the attempted expulsion of the terrorist organization al-Qaeda. The administration formed a preemptive policy against threats to U.S. security known as the Bush Doctrine.

In his 2002 State of the Union address, President George W. Bush labeled North Korea, Iraq, and Iran the "axis of evil," and stated that these countries "constitute a grave threat to the security of the U.S. and its allies." Later that year, the Bush administration began to press for regime change in Iraq, and in 2003, the United States and its allies invaded Iraq, removing Saddam Hussein from power, but igniting sectarian civil strife.

Government and politics

Main articles: Federal government of the United States and Politics of the United States

Political system

The United States is the world's oldest surviving federation. Its government relies on representative democracy through a congressional system under a set of powers specified by its Constitution. However, it is "not a simple representative democracy, but a constitutional republic in which majority rule is tempered by minority rights protected by law."^[33] There are three levels of government, consisting of the federal, state, and local levels. Officials at all three levels are either elected by voters in a secret ballot or appointed by other elected officials. Executive and legislative offices are decided by a plurality vote of citizens in their respective districts, with judicial and cabinet-level offices nominated by the Executive branch and approved by the Legislature. In some states, judicial posts are filled by popular election rather than executive appointment.

The federal government comprises three branches, which are designed to check and balance one another's powers:

• Legislative: The Congress, made up of the Senate and the House of Representatives, which makes federal law, declares war, approves treaties and has powers of impeachment.
• Executive: The President, who appoints, with Senate approval, the Cabinet and other officers, who administers and enforces federal law, can veto bills, and is Commander in Chief of the military.
• Judiciary: The Supreme Court and lower federal courts, whose judges are appointed by the President with Senate approval, which interpret laws and their validity under the Constitution and can overturn laws they deem unconstitutional.

The United States Congress is a bicameral legislature. The House of Representatives has 435 members, each representing a congressional district for a two-year term. House seats are apportioned among the states according to population every tenth year. Each state is guaranteed at least one representative: seven states have one each; California, the most populous state, has 53. Each state has two senators, elected at large to six-year terms; one third of Senate seats are up for election every second year.

The United States Constitution is the supreme legal document in the American system, and serves as a social contract for the people of the United States, regulating their affairs through government chosen by and populated by the people. All laws and procedures of both state and federal governments are subject to review, and any law ruled to violate the Constitution by the judicial branch is overturned. The Constitution is a living document as it can be amended by a variety of methods, all of which require the approval of an overwhelming majority of the states. The Constitution has been amended 27 times, the last time in 1992.

The Constitution contains a dedication to "preserve liberty" with a "Bill of Rights" and other amendments, which guarantee freedom of speech, religion, and the press; the right to a fair trial; the right to keep and bear arms; universal suffrage; and property rights. However, the extent to which these rights are protected and universal in practice is heavily debated. The Constitution also guarantees to every State "a Republican Form of Government". However, the meaning of that guarantee has been only slightly explicated.^[34]

American politics is dominated by the Republican Party of the United States and the Democratic Party of the United States. Members of these two parties hold the overwhelming majority of elected offices across the country at federal, state, and lower levels. Independent or so-called "third party" candidates tend to do better in lower-level elections, although there are presently some independent members of the Senate. Within American political culture the Republican Party is considered "center-right" or conservative while the Democratic Party is considered "center-left" or liberal. The size of both parties has allowed for considerable divergence of views within both parties.

Since 2001, the President has been George W. Bush, a Republican. Following the 2006 mid-term elections, the Democratic Party holds a majority of seats in both the House and Senate for the first time since 1994, except for a Democratic plurality in the Senate in 2001–02.^[35]

Foreign relations and military

Main articles: Foreign relations of the United States and Military of the United States

The United States has vast economic, political, and military influence on a global scale, which makes its foreign policy a subject of great interest and discussion around the world. Almost all countries have embassies in Washington, D.C., and consulates around the country. However, Cuba, Iran, North Korea, and Sudan do not have formal diplomatic relations with the United States.^[36] The United States is a founding member of the United Nations (with a permanent seat on the Security Council), among many other international organizations.

The United States has a long-standing tradition of civilian control over military affairs. The Department of Defense administers the U.S. armed forces, which comprise the Army, the Navy, the Marine Corps, and the Air Force. The Coast Guard falls under the jurisdiction of the Department of Homeland Security in peacetime but is placed under the Department of the Navy in times of war. The military of the United States comprises 1.4 million personnel on active duty,^[37] along with several hundred thousand each in the Reserves and the National Guard. Service in the military is voluntary, though conscription may occur in times of war through the Selective Service System. The United States is considered to have the most powerful military in the world, partly because of the size of its defense budget; American defense expenditures in 2005 were estimated to be greater than the next 14 largest national military budgets combined,^[38] even though the U.S. military budget is only about 4% of the country's gross domestic product.^[39][40] The U.S. military maintains over 700 bases and facilities. It also has bases on every continent except Antarctica.^[41] Today America's principal military allies include Australia, Japan, and the NATO member states, with the United Kingdom being America's closest ally.

Administrative divisions

Main article: Political divisions of the United States

The United States of America consists of 50 states and one federal district, the District of Columbia. The conterminous forty-eight states—all the states but Alaska and Hawaii—are also called the contiguous United States or the "lower 48" and occupy much of central North America. Alaska is separated from the contiguous U.S. by Canada; together, they comprise the continental United States. Hawaii, the fiftieth state, is situated in the Pacific.

The following map presents the 50 states, additional territories and highlights the United States census regions of them:

States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia

Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland

Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey

New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina

South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming

Territories American Samoa Guam Northern Mariana Islands Puerto Rico U.S. Virgin Islands Not Shown District of Columbia

The United States also holds several other territories. Palmyra Atoll is the United States' only incorporated territory; but it is unorganized and uninhabited. The United States Minor Outlying Islands consist of uninhabited islands and atolls in the Pacific and Caribbean Sea. In addition, since 1898, the United States Navy has held an extensive naval base at Guantánamo Bay, Cuba.

In addition to the actual states and territories of the United States, there are also nations which are associated states of the U.S. The Federated States of Micronesia (since 1986), the Marshall Islands (since 1986), and Palau (since 1994) are associated with the United States under what is known as the Compact of Free Association, giving the states international sovereignty and ultimate control over their territory. However, the governments of those areas have agreed to allow the United States to provide defense and financial assistance.

Environment

The U.S. has over 17,000 identified native plant and tree species, including 5,000 just in California (which is home to the tallest, the most massive, and the oldest trees in the world).^[42] With habitats ranging from tropical to arctic, the flora of the U.S. is the most diverse of any country; yet, thousands of non-native exotic species sometimes adversely affect indigenous plant and animal communities. Over 400 species of mammal, 700 species of bird, 500 species of reptile and amphibian, and 90,000 species of insect have been documented.^[43] Many plants and animals are very localized in their distribution, and some are in danger of extinction. The U.S. passed the Endangered Species Act in 1973 to protect native plant and animal species and their habitats.

Conservation has a long history in the U.S.; in 1872, the world's first National Park was established at Yellowstone. Another 57 national parks and hundreds of other federally managed parks and forests have since been designated.^[44] In some parts of the country, wilderness areas have been established to ensure long-term protection of pristine habitats. The U.S. Fish and Wildlife Service monitors endangered and threatened species and has set aside numerous areas for species and habitat preservation. Altogether, the U.S. government regulates 1,020,779 square miles (2,643,807 km²), which is 28.8% of the total land area of the U.S.^[45] The bulk of this land is protected park and forestland, but some is leased for oil and gas exploration, mining, and cattle ranching.

See also: Water supply and sanitation in the United States

Economy

Main articles: Economy of the United States, American middle class, Household income in the United States, Personal income in the United States, and Homeownership in the United States

General situation

Economy of the United States
Median Income[46][47]
Median income	$32,611 for individuals $46,326 for households
Income distribution[48][49]
Top 20%	$52,500 for individuals $91,705 for households
Bottom 20%	$12,500 for individuals $20,000 for households
National economic indicators
Unemployment	4.5%[50]
GDP growth	3.4%
CPI inflation	2.5%[51]
Gini index	46.9%
SOURCE: US Department of Commerce

The economic system of the United States can be described as a capitalist mixed economy, in which corporations, other private firms, and individuals make most microeconomic decisions, and governments prefer to take a smaller role in the domestic economy, although the combined role of all levels of government is relatively large, at 36% of the Gross Domestic Product (GDP). Most businesses in the U.S. are not incorporated and do not have a payroll but are simple sole proprietorships.^[52] The U.S. has a smaller social safety net than that of other developed countries, and regulation of businesses is slightly less than the average of developed countries.^[53] The largest sector in the United States economy is services, which employs roughly three quarters of the work force.^[54]

The economy is fueled by an abundance in natural resources such as coal, petroleum, and precious metals. However, the country depends on foreign countries for much of its energy. In agriculture, the U.S. is a top producer of corn, soy beans, rice, and wheat, with the Great Plains labeled as the "breadbasket of the world" for its tremendous agricultural output and productivity.^[55] The U.S. has a large tourist industry, ranking third in the world,^[56] and is also a major exporter in goods such as airplanes, steel, weapons, and electronics. Canada accounts for 19% (more than any other nation) of the United States' foreign trade, followed by China, Mexico, and Japan.

The per capita income of the United States is among the highest in the world, however it is distributed less equally, ranking lower on the C.I.A. Gini coefficient than Russia and China.^[57] Since 1975, the U.S. has a "two-tier" labor market in which virtually all the real income gains have gone to the top 20% of households, with most of those gains accruing to the very highest earners within that category.^[58] The compensation of the average U.S. chief-executive has increased from 78 times that of a minimum-wage worker in 1978 to 821 times in 2007, a development which has led President George Bush to call for measures increasing shareholder oversight of executive-pay comparable to laws already enacted in the United Kingdom^[59].

The long-term trend for wages of middle-income Americans has largely been stagnate since the 1970s and fallen for low-income earners, despite substantial gains in hourly labor productivity^[60][61]. Illegal immigration is suspected of depressing wages of the poorest one-tenth of the workforce by 7.4%^[62], with some industries such has meatpacking and agriculture being completely dependent on undocumented-workers^[63]. A report from the U.S. Labor Department in 2005 indicated that wages are at their lowest percentage of national G.D.P. on record while corporate profits are at their highest since the 1960s^[64].

Economic activity varies greatly across the country. For example, New York City is the center of the American financial, publishing, broadcasting, fashion, and advertising industries, while Los Angeles is the most important center for film and television production. The San Francisco Bay Area is a major center for technology. The Midwest is known for its reliance on manufacturing and heavy industry, with Detroit serving as the historic center of the American automotive industry, and Chicago serving as the business and financial capital of the region. The Southeast is a major area for agriculture, tourism, and the lumber industry, and, because of wages and costs below the national average, it continues to attract manufacturing.

The social mobility of U.S. residents relative to that of other countries is the subject of much debate. Some analysts have found that social mobility in the United States is low relative to other OECD states, specifically compared to Western Europe, Scandinavia and Canada.^[65][66][67] Low social mobility may stem in part from the U.S. educational system. Public education in the United States is funded mainly by local property taxes supplemented by state revenues. This frequently results in a wide difference in funding between poor districts or poor states and more affluent jurisdictions.^[68][69] Some analysts argue that relative social mobility in the U.S. peaked in the 1960s and declined rapidly beginning in the 1980s.^[70] Former Federal Reserve Board Chairman Alan Greenspan has also suggested that the growing income inequality and low class mobility of the U.S. economy may eventually threaten the entire system in the near future.^[71]

Innovation

Main article: Science and technology in the United States

The United States is an influential country in scientific and technological research and the production of innovative technological products. The bulk of Research and Development funding (69%) comes from the private sector, rather than from taxes.^[72] During World War II, the U.S. led the allied program to develop the atomic bomb, ushering in the atomic age. Beginning early the Cold War, the U.S. achieved successes in space science and technology, leading to a space race which led to rapid advances in rocketry, weaponry, material science, computers, and many other areas. This technological progress was epitomized by the first visit of a man to the moon, when Neil Armstrong stepped off of Apollo 11 in July 1969.^[73] The U.S. was also the most instrumental nation in the development of the Internet, developing its predecessor, Arpanet. U.S. businesses control most of its infrastructure.

Transportation

Main article: Transportation in the United States

The automobile industry developed earlier and more rapidly in the United States than in most other countries. The backbone of the nation's transportation infrastructure is a network of high-capacity highways which carry large numbers of both passenger cars and freight trucks. From data taken in 2004, there are about 3,981,521 miles (6,407,637 km) of roadways in the U.S., the most in the world.^[74]

Mass transit systems exist in large cities, such as New York, which operates one of the busiest subway systems in the world. With a few exceptions, American cities are less dense than those in other parts of the world. Low density partly results from and largely necessitates automobile ownership by most households. The United States is also home to world's largest rail network.^[75]

Air travel is the preferred means of passenger travel for long distances. In terms of passengers, seventeen of the world's thirty busiest airports in 2004 were in the U.S., including the world's busiest, Hartsfield–Jackson Atlanta International Airport (ATL). In terms of cargo, in the same year, twelve of the world's thirty busiest airports were in the U.S., including the world's busiest, Memphis International Airport.

Several major seaports are in the United States. In terms of total cargo volume, the largest ports are Houston (173 million metric tons) and New York (132 million metric tons); while in terms of container traffic, the three busiest are the Port of Los Angeles and Port of Long Beach, and the Port of New York and New Jersey, all among the world's busiest. ^[76] The interior of the U.S. also has major shipping channels, via the St. Lawrence Seaway and the Mississippi River. The first water link between the Great Lakes and the Atlantic, the Erie Canal, allowed the rapid expansion of agriculture and industry in the Midwest and made New York City the economic center of the country.

Demographics

Main articles: Demographics of the United States, Immigration to the United States, and Affluence in the United States

Main articles: Economy of the United States, American middle class, Household income in the United States, Personal income in the United States, and Homeownership in the United States

General situation

On October 17, 2006 at 7:46 a.m. EST, the United States' population stood at an estimated 300,000,000^[77] This figure excludes persons living in the U.S. without legal permission to do so. Due to the nation's size any population estimate needs to be seen as a somewhat rough figure, according to the US Department of Commerce.^[84] According to the 2000 census, about 79% of the population lived in urban areas.^[85] The United States has a highly diverse population, being home to 31 ethnic groups with more than million members.^[86] Among racial demographics, Whites, most of whom are of European ancestry remained the largest racial group^[80] with German-Americans, Irish-Americans and English-Americans constituting the three largest ethnic groups.^[87] The percentages of whites among the general population is, however, declining.^[8] African Americans who are largely the descendants of former slaves constituted the nation's largest racial and third largest ethnic minority.^[80][79]

Demographic trends include the immigration of Hispanics from Latin America into the Southwest, a region that is home to about 60% of the 35 million Hispanics in the United States. Immigrants from Mexico make up about 66% of the Hispanic community and are the second largest ethnic group in the country.^[88] It is estimated that with current population trends non-Hispanic Whites will become a plurality by 2040 to 2050. In the four "majority-minority states" such as California,^[89] New Mexico,^[90] Hawaii^[91] and Texas^[92] such is already the case.

About 17.2% of households and 5.63% of individuals had incomes of $100,000 or more.^[82][81] More than three quarters, 76.3%, of households in the top 20% had two income earners; thus the difference between the percentage of households and individuals with incomes of over $100,000 remains quite considerable.^[93] Overall, the top quintile, those households earning more than $91,705 a year, earned 49.8% of all income in 2006.^[94]

Crime in the United States is characterized by relatively high levels of gun violence and homicide, compared to other developed countries.^[95][96] Levels of property crime and other types of crime in the United States are comparable to other developed countries.^[97]

Indigenous peoples

Main article: Native Americans in the United States

The Indian Citizenship Act of 1924 gave United States citizenship to Native Americans, in part because of an interest by many to see them merged with the American mainstream, and also because of the heroic service of many Native American veterans in the First World War.

According to the 2003 census estimates, there are 2,786,652 Native Americans in the United States. However, numerous indigenous peoples from Latin American countries, particularly Mexico, have migrated to the U.S. over the years.

Languages

Main article: Languages in the United States

Although the United States has no official language at federal level, English is the de facto national language. In 2003, about 215 million, or 82%, of the population aged five years and older spoke only English at home.^[98] Although the United States does not have an official language at the federal level, English is the most common language for daily interaction among both native and non-native speakers. Knowledge of English is required of immigrants seeking naturalization. Nowadays, more languages are used in daily life. Spanish is the most widely taught non-English second language, and the U.S. contains the world’s fifth-largest Spanish speaking population. ^[99][100] Some Americans advocate making English the official language, which is the law in twenty-seven states. Three states also grant official status to other languages alongside English: French in Louisiana, Hawaiian in Hawaii, and Spanish in New Mexico.^[101][8][83]

Largest cities

Main article: List of United States cities by population

The largest cities of the United States figure prominently in the economy, culture, and heritage of the U.S. In 2005, 254 incorporated places in the U.S. had populations greater than 100,000, nine cities had populations greater than one million, and three Alpha global cities had populations greater than 2.8 million (New York City, Los Angeles, and Chicago).^[102] The United States has 51 metropolitan areas with populations greater than one million.^[103]

New York City

Los Angeles

Chicago

Rank	City	Population within city limits (2005)	Population Density per sq mi	Metropolitan Area		Region
				population (2005)	rank
1	New York City, New York	8,143,197	26,720.9	18,747,320	1	Northeast
2	Los Angeles, California	3,844,829	8,198.0	12,923,547	2	West
3	Chicago, Illinois	2,842,518	12,750.3	9,443,356	3	Midwest
4	Houston, Texas	2,016,582	3,371.7	5,280,077	7	South
5	Philadelphia, Pennsylvania	1,463,281	11,233.6	5,823,233	4	Northeast
6	Phoenix, Arizona	1,461,575	2,782.0	3,865,077	14	West
7	San Antonio, Texas	1,256,509	2,808.5	1,889,797	29	South
8	San Diego, California	1,255,540	3,771.9	2,933,462	17	West
9	Dallas, Texas	1,213,825	3,469.9	5,819,475	5	South
10	San Jose, California	912,332	5,117.9	1,754,988	30	West

Religion

Main article: Religion in the United States

The United States government keeps no official register of Americans' religious status.^[104] However, in a private survey conducted in 2001 and mentioned in the Census Bureau's Statistical Abstract of the United States, 76.7% of American adults identified themselves as Christian; about 52% of adults described themselves as members of various Protestant denominations. Roman Catholics, at 24.5%, were the most populous individual denomination. The most popular other faiths include Judaism (1.4%), Islam (0.6%), Buddhism (0.5%), Hinduism (0.4%) and Unitarian Universalism (0.3%). About 14.2% of respondents described themselves as having no religion. The religious distribution of the 5.4% who elected not to describe themselves for the survey is unknown.^[77]

Religion among some Americans is highly dynamic: over the period 1990–2001, those groups whose portion of the population at least doubled were, in descending order of growth, Wiccans, nondenominational Christians, Deists, Sikhs, Evangelical Christians, Disciples of Christ, New Age adherents, Hindus, Full Gospel adherents, Quakers, Bahá'ís, independent Christians, those who refused to answer the question, Buddhists, and Foursquare Gospel adherents.^[77]

Religion has traditionally played a large role in American society; many of the original European colonists came to America for religious reasons. Religion still has a major influence on American politics and culture, arguably more so than in other industrialized nations.

Education

Main articles: Education in the United States and Educational attainment in the United States

Education in the United States is a combination of public and private entities. Public education is the responsibility of state and local governments, rather than the federal government. The Department of Education of the federal government, however, exerts some influence through its ability to control funding. Students are generally obliged to attend school starting with kindergarten, and ending with the 12th grade, which is normally completed at age 18, but many states may allow students to drop out as early as age 16. Besides public schools, parents may also choose to educate their own children at home or to send their children to parochial or private schools. After high school, most graduates voluntarily go on to community colleges, state colleges, private colleges, universities, or proprietary (for profit) trade schools. Each of these charges tuition (ranging from $1000 a year to $35,000 a year).

Public universities receive part of their funding from the state governments. Alumni donations and other sources also contribute large amounts of funding to both public and private universities, and most of the top university endowments in the world are owned by universities in the United States. Many students take out low-interest student loans that they are required to pay back after graduation (the interest paid on such loans is tax deductible). Tuition at private universities is generally much higher than at public universities.

There are many competitive institutions of higher education in the United States, both private and public. The United States has 168 universities in the world's top 500, 17 of which are in the top 20.^[105] There are also many smaller universities and liberal arts colleges, and local community colleges of varying quality across the country with open admission policies.

The United Nations assigned an Education Index of 99.9 to the United States, ranking it number 1 in the world, a position it shares with about 20 other nations.^[106] The United States has a basic literacy rate at 98%^[107] to 99%^[108] of the population over age 15. As for educational attainment, 27.2% of the population aged 25 and above have earned a bachelor's degree or higher, and 84.6% have graduated high school.^[109]

Health

Main article: Health care in the United States

The overall performance of the United States health care system was ranked 15th by the World Health Organization.^[110] The United States far outspends (combined private and public expenditures) any other nation in healthcare, measured in terms of both per capita spending and percentage of GDP.^[111]. This spending has not correlated with a high ranking in many public health metrics. The CIA World Factbook indicates that the United States has a higher infant mortality rate and slightly lower life expectancy than some other post-industrial western nations such as Sweden,^[112] Germany^[113] or France.^[114][115] The average salary of a physician in the US is the highest in the world.^[116] Obesity is a public health problem, estimated to cost tens of billions of dollars annually.^[117]

Unlike some other Western countries, the U.S. healthcare system is not fully publicly-funded, instead relying on a mix of public and private funding. In 2004, private insurance paid for 36% of personal health expenditure, private out-of-pocket payments covered 15%, and federal, state, and local governments paid for 44%.^[118]

In 2005, 41.2 million people in the U.S. (14.2 percent of the population) were without healthcare insurance for at least part of that year.^[119] Many of these people may have been between jobs for part of the year, which could leave them without coverage as health insurance is often provided as a benefit of employment. Not all those without insurance were unable to afford it — approximately one third of the 41.2 million who were without insurance for part of the year lived in households with annual incomes over $50,000, with half of these having an income of over $75,000.^[120] Presumably some of these people chose not to purchase insurance, for example because they perceived themselves as being at low risk of serious illness. Another third of the 41.2 million were eligible for public health insurance programs but had not signed up for them.^[121] This leaves substantially fewer than 41.2 million people who were without access to healthcare insurance because they could not afford to purchase it privately. Although emergency care facilities are required to provide service regardless of the patient's ability to pay, medical bills remain the most common reason for personal bankruptcy in the United States.^[122]

The nation spends a substantial amount on medical research, mostly privately-funded. As of 2000, non-profit private organizations funded 7% (such as the Howard Hughes Medical Institute), private industry funded 57%, and the tax-funded National Institutes of Health funded 36% of medical research in the U.S.^[123] As of 2003, the NIH funded 28% of medical research funding; funding by private industry increased 102% from 1994 to 2003.^[124]

Culture

Main article: Culture of the United States

The culture of the United States began as the culture of its first English colonists. The culture quickly evolved as an independent frontier culture combined with Spanish–Mexican culture to create a cowboy culture, and by the cultures of subsequent waves of immigrants, first from Europe and Africa and later from Asia. Overall, significant cultural influences came from Europe, especially from the German, English and Irish cultures and later from Italian, Greek and Ashkenazi cultures. Descendants of enslaved West Africans preserved some cultural traditions from West Africa in the early United States. Geographical place names largely reflect the combined English, Dutch, French, German, Spanish, and Native American components of U.S. history.^[8] There are two dominant sociological models of cultural assimilation. The traditional melting pot model describes a form of homogenization. Immigrants from other cultures bring unique cultural aspects which are incorporated into the larger American culture, but then the immigrant populations gradually adopt the unified culture, forming a single "alloy". A more recently articulated model is that of the salad bowl, in which immigrant cultures retain some of their unique characteristics. Instead of merging with a unified American culture, they intermingle, forming a heterogeneous mixture, not unlike a salad composed of different vegetables.^[125][8] There is considerable contemporary political debate over the merits of cultural assimilation versus pluralism or multiculturalism.

An important component of American culture is the American Dream: the idea that, through hard work, courage, and self-determination, regardless of social class, a person can gain a better life.^[126]

Cuisine

Main article: Cuisine of the United States

American cuisine uses Native American ingredients such as turkey, potatoes, corn, and squash, which have become integral parts of American culture. Such popular icons as apple pie, pizza, and hamburgers are either derived from or are actual European dishes. Burritos and tacos have their origins in Mexico. Soul food, which originated among African slaves, is popular in the U.S. as well. However, many foods now enjoyed worldwide either originated in the United States or were altered by American chefs.

Visual arts

Main article: Visual arts of the United States

In the eighteenth and early nineteenth centuries American art took most of its cues from Europe. Painting, sculpture, and literature looked to Europe as a model, and for approval. By the end of the U.S. Civil War, a more native voice had emerged in American literature. Mark Twain, Emily Dickinson, and Walt Whitman all spoke in an American vernacular and voice. Visual art was slower to find its own distinct American expression. The 1913 Armory show in New York City, an exhibition which brought European modernist artists' work to the U.S., both shocked the public and influenced art making in the United States for the remainder of the twentieth century. The exhibition had a twofold effect of communicating to American artists that art making was about expression, not only aesthetics or realism, and at the same time showing that Europe had abandoned its conservative model of ranking artists according to a strict academic hierarchy. This encouraged American artists to find a personal voice, and a modernist movement, responding to American civilization, emerged in the United States. Alfred Stieglitz (1864–1946), photographer, Charles Demuth (1883–1935) and Marsden Hartley (1877–1943), both painters, helped establish an American viewpoint in the fine arts. The Museum of Modern Art in New York, founded in 1929, became a showcase for American and International contemporary art. Following the conclusion of the Second World War, a shift occurred with the decline of Paris as the world's art center and the emergence of New York as the center of contemporary fine art for the U.S. and the world.

Literature

Main article: Literature of the United States

Americans have produced much notable literature across genres. The phrase 'Great American Novel' is often used to describe a work which captures the American essence in its narrative. Among the masterworks to which this title has been applied are Herman Melville's Moby-Dick, Mark Twain's Adventures of Huckleberry Finn, F. Scott Fitzgerald's The Great Gatsby, and Toni Morrison's Beloved. American-born or naturalized citizens have won the Nobel Prize in Literature twelve times, the most recent winner being Morrison in 1993.

Music

Main article: Music of the United States

Music also traces to the country's diverse cultural roots through an array of styles. Rock, pop, soul, hip hop, country, blues, and jazz are among the country's most internationally renowned genres. Since the late 19th century, popular recorded music from the United States has become increasingly known across the world, such that some forms of American popular music are heard almost everywhere.^[127]

Cinema

Main article: Cinema of the United States

The birth of cinema, as well as its development, largely took place in the United States. In 1878, the first recorded instance of sequential photographs capturing and reproducing motion was Eadweard Muybridge's series of a running horse, which the British-born photographer produced in Palo Alto, California, using a row of still cameras. Since then, the American film industry, based in Hollywood, California, has had a profound effect on cinema across the world. Other genres that originated in the United States and spread worldwide include the comic book and Disney's animated films.

Sports

Main article: Sports in the United States

Sports are a national pastime, and playing sports, especially American football, baseball, and basketball, is very popular at the high school level. Professional sports in the U.S. is big business and contains most of the world's highest paid athletes.^[129] The "Big Four" sports are baseball, American football, ice hockey, and basketball.^[130] Baseball is referred to as "the national pastime"; however, since the early 1990s, American football has largely been considered the most popular sport in the United States.

Other sports, including auto racing, lacrosse, soccer, golf, and tennis, have significant followings. The United States is among the most influential countries in shaping three popular board-based recreational sports: surfboarding, skateboarding, and snowboarding. Eight Olympiads have taken place in the United States; in medals won, the United States ranks third all-time in the Winter Games, with 218 (78 gold, 81 silver, and 59 bronze),^[131][132] and first in the Summer Games, with 2,321 (943 gold, 736 silver, and 642 bronze).^[133][134]

See also: Arts and entertainment in the United States, Media of the United States, Dance of the United States, Architecture of the United States, Holidays of the United States, Lists of Americans, and Social structure of the United States

See also

Main article: List of United States-related topics

• Articles of Confederation
• United States Constitution
• History of the United States
• International rankings of the United States
• Historical Columbia
• Use of the word American

Notes

Further reading

External links

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Overviews

• United States at Wikitravel - Travel Guide and tourist information on United States
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• Portrait of the United States - Published by the United States Information Agency, September 1997.
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History

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Maps

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Immigration

• U.S. Citizenship and Immigration Services USCIS.gov.
• U.S. citizenship sample civics questions for naturalization interview Immihelp.com - from an immigrant to future immigrants.
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Other

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