United States 




 



Population: 316,668,567









 Background

Britain's American colonies broke with the
mother country in 1776 and were recognized as the new nation of the
United States of America following the Treaty of Paris in 1783. During
the 19th and 20th centuries, 37 new states were added to the original 13
as the nation expanded across the North American continent and acquired
a number of overseas possessions. The two most traumatic experiences in
the nation's history were the Civil War (1861-65), in which a northern
Union of states defeated a secessionist Confederacy of 11 southern slave
states, and the Great Depression of the 1930s, an economic downturn
during which about a quarter of the labor force lost its jobs. Buoyed by
victories in World Wars I and II and the end of the Cold War in 1991,
the US remains the world''s most powerful nation state. Since the end of
World War II, the economy has achieved relatively steady growth, low
unemployment and inflation, and rapid advances in technology.




















































































































































































 Geography

World's third-largest country by size (after
Russia and Canada) and by population (after China and India); Mt.
McKinley is highest point in North America and Death Valley the lowest
point on the continent
Location:
North America, bordering both the North
Atlantic Ocean and the North Pacific Ocean, between Canada and Mexico
Geographic coordinates: 38 00 N, 97 00 W
Area:
total: 9,826,675 sq km land:
9,161,966 sq km water: 664,709 sq km
note: includes only the 50 states and District of Columbia

Size comparison:
about half the size of Russia; about
three-tenths the size of Africa; about half the size of South America
(or slightly larger than Brazil); slightly larger than China; more than
twice the size of the European Union
Land Boundaries:
total: 12,034 km border countries:
Canada 8,893 km (including 2,477 km with Alaska), Mexico 3,141 km
note: US Naval Base at Guantanamo Bay, Cuba is leased by the
US and is part of Cuba; the base boundary is 28 km
Coastline: 19,924 km
Maritime claims:
territorial sea: 12 nm contiguous zone:
24 nm exclusive economic zone: 200 nm
continental shelf: not specified
Climate:
mostly temperate, but tropical in Hawaii and
Florida, arctic in Alaska, semiarid in the great plains west of the
Mississippi River, and arid in the Great Basin of the southwest; low
winter temperatures in the northwest are ameliorated occasionally in
January and February by warm chinook winds from the eastern slopes of
the Rocky Mountains
Terrain:
vast central plain, mountains in west, hills and
low mountains in east; rugged mountains and broad river valleys in
Alaska; rugged, volcanic topography in Hawaii
Elevation extremes:
lowest point: Death Valley -86 m highest
point: Mount McKinley (Denali) 6,194 m (highest point in North
America) note: the peak of Mauna Kea (4,207 m above sea
level) on the island of Hawaii rises about 10,200 m above the Pacific
Ocean floor; by this measurement, it is the world's tallest mountain -
higher than Mount Everest (8,850 m), which is recognized as the tallest
mountain above sea level
Natural resources:
coal, copper, lead, molybdenum, phosphates, rare
earth elements, uranium, bauxite, gold, iron, mercury, nickel, potash,
silver, tungsten, zinc, petroleum, natural gas, timber note:
the US has the world's largest coal reserves with 491 billion short
tons accounting for 27% of the world's total
Land use: arable land: 16.29% permanent crops: 0.26% other: 83.44% (2011)
Irrigated land: 266,440 sq km (2007)
Natural hazards:
tsunamis; volcanoes; earthquake activity around
Pacific Basin; hurricanes along the Atlantic and Gulf of Mexico coasts;
tornadoes in the Midwest and Southeast; mud slides in California; forest
fires in the west; flooding; permafrost in northern Alaska, a major
impediment to development volcanism: volcanic activity in
the Hawaiian Islands, Western Alaska, the Pacific Northwest, and in the
Northern Mariana Islands; both Mauna Loa (elev. 4,170 m) in Hawaii and
Mount Rainier (elev. 4,392 m) in Washington have been deemed "Decade
Volcanoes" by the International Association of Volcanology and Chemistry
of the Earth's Interior, worthy of study due to their explosive history
and close proximity to human populations; Pavlof (elev. 2,519 m) is the
most active volcano in Alaska's Aleutian Arc and poses a significant
threat to air travel since the area constitutes a major flight path
between North America and East Asia; St. Helens (elev. 2,549 m), famous
for the devastating 1980 eruption, remains active today; numerous other
historically active volcanoes exist, mostly concentrated in the Aleutian
arc and Hawaii; they include: in Alaska: Aniakchak, Augustine,
Chiginagak, Fourpeaked, Iliamna, Katmai, Kupreanof, Martin, Novarupta,
Redoubt, Spurr, Wrangell; in Hawaii: Trident, Ugashik-Peulik, Ukinrek
Maars, Veniaminof; in the Northern Mariana Islands: Anatahan; and in the
Pacific Northwest: Mount Baker, Mount Hood
Current Environment Issues:
air pollution resulting in acid rain in both the
US and Canada; large emitter of carbon dioxide from the burning of
fossil fuels; water pollution from runoff of pesticides and fertilizers;
limited natural freshwater resources in much of the western part of the
country require careful management; desertification
International Environment Agreements:
party to: Air Pollution, Air Pollution-Nitrogen
Oxides, Antarctic-Environmental Protocol, Antarctic-Marine Living
Resources, Antarctic Seals, Antarctic Treaty, Climate Change,
Desertification, Endangered Species, Environmental Modification, Marine
Dumping, Marine Life Conservation, Ozone Layer Protection, Ship
Pollution, Tropical Timber 83, Tropical Timber 94, Wetlands, Whaling
signed, but not ratified: Air Pollution-Persistent Organic
Pollutants, Air Pollution-Volatile Organic Compounds, Biodiversity,
Climate Change-Kyoto Protocol, Hazardous Wastes
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 People
Nationality: noun: American(s) adjective: American
Ethnic groups:
white 79.96%, black 12.85%, Asian 4.43%,
Amerindian and Alaska native 0.97%, native Hawaiian and other Pacific
islander 0.18%, two or more races 1.61% (July 2007 estimate)
note: a separate listing for Hispanic is not included because the
US Census Bureau considers Hispanic to mean persons of
Spanish/Hispanic/Latino origin including those of Mexican, Cuban, Puerto
Rican, Dominican Republic, Spanish, and Central or South American
origin living in the US who may be of any race or ethnic group (white,
black, Asian, etc.); about 15.1% of the total US population is Hispanic
Languages:
English 82.1%, Spanish 10.7%, other Indo-European
3.8%, Asian and Pacific island 2.7%, other 0.7% (2000 census)
note: the US has no official national language, but English has
acquired official status in 28 of the 50 states; Hawaiian is an official
language in the state of Hawaii
Religions:
Protestant 51.3%, Roman Catholic 23.9%, Mormon
1.7%, other Christian 1.6%, Jewish 1.7%, Buddhist 0.7%, Muslim 0.6%,
other or unspecified 2.5%, unaffiliated 12.1%, none 4% (2007 est.)
Population: 316,668,567 (July 2013 est.)
Age structure:
0-14 years: 20% (male 32,344,207/female
31,006,688) 15-24 years: 13.7% (male 22,082,128/female
21,157,025) 25-54 years: 40.2% (male 63,802,736/female
63,581,749) 55-64 years: 12.3% (male 18,699,338/female
20,097,791) 65 years and over: 13.9% (male
19,122,853/female 24,774,052) (2013 est.)
Dependency ratios:
total dependency ratio: 50.4 % youth
dependency ratio: 29.4 % elderly dependency ratio:
21 % potential support ratio: 4.8 (2013)
Median age: total: 37.2 years
male: 35.9 years female: 38.5 years (2013 est.)
Population growth rate: 0.9% (2013 est.)
Birth rate: 13.66 births/1,000 population (2013 est.)
Death rate: 8.39 deaths/1,000 population (2013 est.)
Net migration rate: 3.64 migrant(s)/1,000 population (2013 est.)
Urbanization:
urban population: 82% of total population (2010)
rate of urbanization: 1.2% annual rate of change (2010-15
est.)
Major urban areas - population:
New York-Newark 19.3 million; Los Angeles-Long
Beach-Santa Ana 12.675 million; Chicago 9.134 million; Miami 5.699
million; WASHINGTON, D.C. (capital) 4.421 million (2009)
Sex ratio:
at birth: 1.05 male(s)/female 0-14 years:
1.04 male(s)/female 15-24 years: 1.04
male(s)/female 25-54 years: 1 male(s)/female
55-64 years: 0.93 male(s)/female 65 years and over:
0.77 male(s)/female total population: 0.97
male(s)/female (2013 est.)
Mother's mean age at first birth: 25 (2006 est.)
Maternal mortality rate: 21 deaths/100,000 live births (2010)
Infant mortality rate: total: 5.9 deaths/1,000 live births
male: 6.55 deaths/1,000 live births female: 5.22 deaths/1,000 live births (2013 est.)
Life expectancy at birth: total population: 78.62 years
male: 76.19 years female: 81.17 years (2013 est.)
Total fertility rate: 2.06 children born/woman (2013 est.)
Contraceptive prevalence rate: 76.4% note: percent of women aged 15-44 (2010)
Health expenditures: 17.9% of GDP (2010)
Physicians density: 2.67 physicians/1,000 population (2004)
Hospital bed density: 3 beds/1,000 population (2009)
Drinking water source:
improved: urban: 100% of population
rural: 94% of population total: 99% of population
unimproved: urban: 0% of population rural: 6% of population
total: 1% of population (2010 est.)
Sanitation facility access:
improved: urban: 100% of population
rural: 99% of population total: 100% of population
unimproved: urban: 0% of population rural: 1% of population
total: 0% of population (2010 est.)
HIV/AIDS - adult prevalence rate: 0.6% (2009 est.)
HIV/AIDS - people living with HIV/AIDS: 1.2 million (2009 est.)
HIV/AIDS - deaths: 17,000 (2009 est.)
Obesity - adult prevalence rate: 33% (2008)
Children under the age of 5 years underweight: 1.3% (2004)
Education expenditures: 5.4% of GDP (2009)
Literacy: definition: age 15 and over can read and write
total population: 99% male: 99% female: 99% (2003 est.)
School life expectancy (primary to tertiary education): total: 17 years
male: 16 years female: 18 years (2010)
Unemployment, youth ages 15-24: total: 17.3%
male: 18.7% female: 15.7% (2011)
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 Government
Country name:
conventional long form: United States of
America conventional short form: United States
abbreviation: US or USA
Government type: Constitution-based federal republic; strong democratic tradition
Capital:
name: Washington, DC geographic
coordinates: 38 53 N, 77 02 W time difference:
UTC-5 (during Standard Time) daylight saving time: +1hr,
begins second Sunday in March; ends first Sunday in November
note: the 50 United States cover six time zones
Administrative divisions:
50 states and 1 district*; Alabama, Alaska,
Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District
of Columbia*, 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
Dependent areas:
American Samoa, Baker Island, Guam, Howland
Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Islands,
Navassa Island, Northern Mariana Islands, Palmyra Atoll, Puerto Rico,
Virgin Islands, Wake Island note: from 18 July 1947 until
1 October 1994, the US administered the Trust Territory of the Pacific
Islands; it entered into a political relationship with all four
political entities: the Northern Mariana Islands is a commonwealth in
political union with the US (effective 3 November 1986); the Republic of
the Marshall Islands signed a Compact of Free Association with the US
(effective 21 October 1986); the Federated States of Micronesia signed a
Compact of Free Association with the US (effective 3 November 1986);
Palau concluded a Compact of Free Association with the US (effective 1
October 1994)
Independence: 4 July 1776 (declared); 3 September 1783 (recognized by Great Britain)
National holiday: Independence Day, 4 July (1776)
Constitution: 17 September 1787, effective 4 March 1789; amended many times, most recently in 1992
Legal system:
common law system based on English common law at
the federal level; state legal systems based on common law except
Louisiana, which is based on Napoleonic civil code; judicial review of
legislative acts
Suffrage: 18 years of age; universal
Executive branch:
chief of state: President Barack H. OBAMA (since
20 January 2009); Vice President Joseph R. BIDEN (since 20 January
2009); note - the president is both the chief of state and head of
government head of government: President Barack H. OBAMA
(since 20 January 2009); Vice President Joseph R. BIDEN (since 20
January 2009) cabinet: Cabinet appointed by the president
with Senate approval (For more information visit the World
Leaders website ) elections: president and vice president
elected on the same ticket by a college of representatives who are
elected directly from each state; president and vice president serve
four-year terms (eligible for a second term); election last held 6
November 2012 (next to be held on 8 November 2016) election
results: Barack H. OBAMA reelected president; percent of popular
vote - Barack H. OBAMA 50.6%, Mitt ROMNEY 47.9%, other 1.5%;
Legislative branch:
bicameral Congress consists of the Senate (100
seats, 2 members elected from each state by popular vote to serve
six-year terms; one-third elected every two years) and the House of
Representatives (435 seats; members directly elected by popular vote to
serve two-year terms) elections: Senate - last held on 6
November 2012 (next to be held on 4 November 2014); House of
Representatives - last held on 6 November 2012 (next to be held on 4
November 2014) election results: Senate - percent of vote
by party - NA; seats by party - Democratic Party 54, Republican Party
45, independent 1; House of Representatives - percent of vote by party -
NA; seats by party - Democratic Party 201, Republican Party 234
Judicial branch:
highest court(s): US Supreme Court (consists of 9
justices - the chief justice and 8 associate justices) note - The
US court system consists of the federal court system and the state court
systems; although each court system is responsible for hearing certain
types of cases, neither is completely independent of the other, and the
systems often interact judge selection and term of office:
president nominates, and with the advice and consent of the Senate,
appoints Supreme Court justices; justices appointed for life
subordinate courts: Courts of Appeal (includes the US Court of
Appeal for the Federal District and 12 regional appeals courts); 94
federal district courts in 50 states and territories
Political parties and leaders:
Democratic Party [Debbie Wasserman SCHULTZ]
Green Party Libertarian Party [Mark HINKLE] Republican
Party [Reince PRIEBUS]
Political pressure groups and leaders:
environmentalists; business groups; labor unions;
churches; ethnic groups; political action committees or PACs; health
groups; education groups; civic groups; youth groups; transportation
groups; agricultural groups; veterans groups; women's groups; reform
lobbies
International organization participation:
ADB (nonregional member), AfDB (nonregional
member), ANZUS, APEC, Arctic Council, ARF, ASEAN (dialogue partner),
Australia Group, BIS, BSEC (observer), CBSS (observer), CD, CE
(observer), CERN (observer), CICA (observer), CP, EAPC, EAS, EBRD, EITI
(implementing country), FAO, FATF, G-20, G-5, G-7, G-8, G-10, IADB,
IAEA, IBRD, ICAO, ICC (national committees), ICRM, IDA, IEA, IFAD, IFC,
IFRCS, IGAD (partners), IHO, ILO, IMF, IMO, IMSO, Interpol, IOC, IOM,
ISO, ITSO, ITU, ITUC (NGOs), MIGA, MINUSTAH, MONUSCO, NAFTA, NATO, NEA,
NSG, OAS, OECD, OPCW, OSCE, Paris Club, PCA, PIF (partner), SAARC
(observer), SELEC (observer), SICA (observer), SPC, UN, UNCTAD, UNESCO,
UNHCR, UNITAR, UNMIL, UNMISS, UNRWA, UNSC (permanent), UNTSO, UPU, WCO,
WHO, WIPO, WMO, WTO, ZC
National symbol(s): bald eagle
National anthem:
name: "The Star-Spangled Banner"
lyrics/music: Francis Scott KEY/John Stafford SMITH
note: adopted 1931; during the War of 1812, after witnessing the
successful American defense of Fort McHenry in Baltimore following
British naval bombardment, Francis Scott KEY wrote the lyrics to what
would become the national anthem; the lyrics were set to the tune of
"The Anacreontic Song"; only the first verse is sung
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 Economy

The US has the largest and most
technologically powerful economy in the world, with a per capita GDP of
$49,800. In this market-oriented economy, private individuals and
business firms make most of the decisions, and the federal and state
governments buy needed goods and services predominantly in the private
marketplace. US business firms enjoy greater flexibility than their
counterparts in Western Europe and Japan in decisions to expand capital
plant, to lay off surplus workers, and to develop new products. At the
same time, they face higher barriers to enter their rivals' home markets
than foreign firms face entering US markets. US firms are at or near
the forefront in technological advances, especially in computers and in
medical, aerospace, and military equipment; their advantage has narrowed
since the end of World War II. The onrush of technology largely
explains the gradual development of a "two-tier labor market" in which
those at the bottom lack the education and the professional/technical
skills of those at the top and, more and more, fail to get comparable
pay raises, health insurance coverage, and other benefits. Since 1975,
practically all the gains in household income have gone to the top 20%
of households. Since 1996, dividends and capital gains have grown faster
than wages or any other category of after-tax income. Imported oil
accounts for nearly 55% of US consumption. Crude oil prices doubled
between 2001 and 2006, the year home prices peaked; higher gasoline
prices ate into consumers' budgets and many individuals fell behind in
their mortgage payments. Oil prices climbed another 50% between 2006 and
2008, and bank foreclosures more than doubled in the same period.
Besides dampening the housing market, soaring oil prices caused a drop
in the value of the dollar and a deterioration in the US merchandise
trade deficit, which peaked at $840 billion in 2008. The sub-prime
mortgage crisis, falling home prices, investment bank failures, tight
credit, and the global economic downturn pushed the United States into a
recession by mid-2008. GDP contracted until the third quarter of 2009,
making this the deepest and longest downturn since the Great Depression.
To help stabilize financial markets, in October 2008 the US Congress
established a $700 billion Troubled Asset Relief Program (TARP). The
government used some of these funds to purchase equity in US banks and
industrial corporations, much of which had been returned to the
government by early 2011. In January 2009 the US Congress passed and
President Barack OBAMA signed a bill providing an additional $787
billion fiscal stimulus to be used over 10 years - two-thirds on
additional spending and one-third on tax cuts - to create jobs and to
help the economy recover. In 2010 and 2011, the federal budget deficit
reached nearly 9% of GDP. In 2012 the federal government reduced the
growth of spending and the deficit shrank to 7.6% of GDP. Wars in Iraq
and Afghanistan required major shifts in national resources from
civilian to military purposes and contributed to the growth of the
budget deficit and public debt. Through 2011, the direct costs of the
wars totaled nearly $900 billion, according to US government figures. US
revenues from taxes and other sources are lower, as a percentage of
GDP, than those of most other countries. In March 2010, President OBAMA
signed into law the Patient Protection and Affordable Care Act, a health
insurance reform that will extend coverage to an additional 32 million
American citizens by 2016, through private health insurance for the
general population and Medicaid for the impoverished. Total spending on
health care - public plus private - rose from 9.0% of GDP in 1980 to
17.9% in 2010. In July 2010, the president signed the DODD-FRANK Wall
Street Reform and Consumer Protection Act, a law designed to promote
financial stability by protecting consumers from financial abuses,
ending taxpayer bailouts of financial firms, dealing with troubled banks
that are "too big to fail," and improving accountability and
transparency in the financial system - in particular, by requiring
certain financial derivatives to be traded in markets that are subject
to government regulation and oversight. In December 2012, the Federal
Reserve Board announced plans to purchase $85 billion per month of
mortgage-backed and Treasury securities in an effort to hold down
long-term interest rates, and to keep short term rates near zero until
unemployment drops to 6.5% from the December rate of 7.8%, or until
inflation rises above 2.5%. Long-term problems include stagnation of
wages for lower-income families, inadequate investment in deteriorating
infrastructure, rapidly rising medical and pension costs of an aging
population, energy shortages, and sizable current account and budget
deficits - including significant budget shortages for state governments.
GDP (purchasing power parity):
GDP (purchasing power parity): $15.94 trillion
(2012 est.) $15.6 trillion (2011 est.) $15.32
trillion (2010 est.) note: data are in 2012 US dollars
GDP (official exchange rate): GDP (official exchange rate): $15.68 trillion (2012 est.)
GDP - real growth rate: 2.2% (2012 est.) 1.8% (2011 est.) 2.4% (2010 est.)
GDP - per capita (PPP):
GDP - per capita (PPP): $50,700 (2012 est.)
$50,000 (2011 est.) $49,500 (2010 est.)
note: data are in 2012 US dollars
Gross national saving: 10.1% of GDP (2012 est.) 9.2% of GDP (2011 est.) 8.9% of GDP (2010 est.)
GDP - composition, by end use:
household consumption: 70.9% government
consumption: 19.5% investment in fixed capital:
12.8% investment in inventories: 0.4% exports of
goods and services: 13.9% imports of goods and services:
-17.5% (2012 est.)
GDP - composition, by sector of origin:
household consumption: 70.9% government
consumption: 19.5% investment in fixed capital:
12.8% investment in inventories: 0.4% exports of
goods and services: 13.9% imports of goods and services:
-17.5% (2012 est.)
Agriculture - products:
wheat, corn, other grains, fruits, vegetables,
cotton; beef, pork, poultry, dairy products; fish; forest products
Industries:
highly diversified, world leading,
high-technology innovator, second largest industrial output in world;
petroleum, steel, motor vehicles, aerospace, telecommunications,
chemicals, electronics, food processing, consumer goods, lumber, mining
Industrial production growth rate: 3.2% (2012 est.)
Labor force: 155 million note: includes unemployed (2012 est.)
Labor force - by occupation:
farming, forestry, and fishing: 0.7%
manufacturing, extraction, transportation, and crafts: 20.3%
managerial, professional, and technical: 37.3% sales
and office: 24.2% other services: 17.6%
note: figures exclude the unemployed (2009)
Unemployment rate: 8.1% (2012 est.) 9% (2011 est.)
Population below poverty line: 15.1% (2010 est.)
Household income or consumption by percentage share: lowest 10%: 2% highest 10%: 30% (2007 est.)
Distribution of family income - Gini index: 45 (2007) 40.8 (1997)
Budget:
revenues: $2.449 trillion expenditures:
$3.538 trillion note: for the US, revenues exclude
social contributions of approximately $1.0 trillion; expenditures
exclude social benefits of approximately $2.3 trillion (2012 est.)
Taxes and other revenues:
15.6% of GDP note:
excludes contributions for social security and other programs; if social
contributions were added, taxes and other revenues would amount to
approximately 22% of GDP (2012 est.)
Public debt:
72.5% of GDP (2012 est.)
67.8% of GDP (2011 est.) note: data cover only what the
United States Treasury denotes as "Debt Held by the Public," which
includes all debt instruments issued by the Treasury that are owned by
non-US Government entities; the data include Treasury debt held by
foreign entities; the data exclude debt issued by individual US states,
as well as intra-governmental debt; intra-governmental debt consists of
Treasury borrowings from surpluses in the trusts for Federal Social
Security, Federal Employees, Hospital Insurance (Medicare and Medicaid),
Disability and Unemployment, and several other smaller trusts; if data
for intra-government debt were added, "Gross Debt" would increase by
about one-third of GDP
Fiscal year: 1 October - 30 September
Inflation rate (consumer prices): Inflation rate (consumer prices): 2.1% (2012 est.) 3.1% (2011 est.)
Current account balance: -$487.2 billion (2012 est.) -$465.9 billion (2011 est.)
Exports: $1.564 trillion (2012 est.) $1.497 trillion (2011 est.)
Exports - commodities:
agricultural products (soybeans, fruit, corn)
9.2%, industrial supplies (organic chemicals) 26.8%, capital goods
(transistors, aircraft, motor vehicle parts, computers,
telecommunications equipment) 49.0%, consumer goods (automobiles,
medicines) 15.0%
Exports - partners: Canada 18.9%, Mexico 14%, China 7.2%, Japan 4.5% (2012)
Imports: $2.299 trillion (2012 est.) $2.236 trillion (2011 est.)
Imports - commodities:
agricultural products 4.9%, industrial supplies
32.9% (crude oil 8.2%), capital goods 30.4% (computers,
telecommunications equipment, motor vehicle parts, office machines,
electric power machinery), consumer goods 31.8% (automobiles, clothing,
medicines, furniture, toys)
Imports - partners: China 19%, Canada 14.1%, Mexico 12%, Japan 6.4%, Germany 4.7% (2012)
Reserves of foreign exchange and gold: $150.2 billion (31 December 2012 est.) $148 billion (31 December 2011 est.)
Debt - external:
$15.93 trillion (31 December 2012)
$15.51 trillion (31 December 2011) note:
approximately 4/5ths of US external debt is denominated in US dollars;
foreign lenders have been willing to hold US dollar denominated debt
instruments because they view the dollar as the world's reserve currency
Stock of direct foreign investment - at home: $2.723 trillion (31 December 2012 est.) $2.548 trillion (31 December 2011 est.)
Stock of direct foreign investment - abroad: $4.507 trillion (31 December 2012 est.) $4.156 trillion (31 December 2011 est.)
Market value of publicly traded shares:
$15.64 trillion (31 December 2011)
$17.14 trillion (31 December 2010) $15.08 trillion (31
December 2009)
Exchange rates:
British pounds per US dollar: 0.6324 (2012 est.),
0.624 (2011 est.), 0.6472 (2010), 0.6175 (2009), 0.5302 (2008)
Canadian dollars per US dollar: (2012 est.), 1.001 (2012 est.),
0.9895 (2011 est), 1.0302 (2010 est.), 1.1431 (2009), 1.0364 (2008)
Chinese yuan per US dollar: (2011 est.), 6.311 (2012 est.),
6.4615 (20111 est.), 6.7703 (2010 est.), 6.8314 (2009), 6.9385 (2008)
euros per US dollar: 0.7838 (2012 est.), 0.7185 (2011
est.), 0.755 (2010 est.), 0.7198 (2009), 0.6827 (2008) Japanese
yen per US dollar: 79.42 (2012 est.), 79.81 (2011 est.), 87.78
(2010), 93.57 (2009), 103.58 (2008)
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 Energy
Electricity - production: 4.12 trillion kWh (2010 est.) country comparison to the world: 2
Electricity - consumption: 3.889 trillion kWh (2010 est.)
Electricity - exports: 19.41 billion kWh (2010 est.)
Electricity - imports: 45.23 billion kWh (2010 est.)
Electricity - installed generating capacity: 1.025 billion kW (2010 est.)
Electricity - from fossil fuels: 75.5% of total installed capacity (2010 est.)
Electricity - from nuclear fuels: 9.9% of total installed capacity (2010 est.)
Electricity - from hydroelectric plants: 7.7% of total installed capacity (2010 est.)
Electricity - from other renewable sources: 4.8% of total installed capacity (2010 est.)
Crude oil - production: 9.023 million bbl/day (2011 est.)
Crude oil - exports: 43,800 bbl/day (2009 est.)
Crude oil - imports: 9.013 million bbl/day (2009 est.)
Crude oil - proved reserves: 20.68 billion bbl (1 January 2012 est.)
Refined petroleum products - production: 17.88 million bbl/day (2009 est.)
Refined petroleum products - consumption: 18.84 million bbl/day (2011 est.)
Refined petroleum products - exports: 1.876 million bbl/day (2009 est.)
Refined petroleum products - imports: 1.255 million bbl/day (2009 est.)
Natural gas - production: 651.3 billion cu m (2011 est.)
Natural gas - consumption: 689.9 billion cu m (2011 est.)
Natural gas - exports: 42.67 billion cu m (2011 est.)
Natural gas - imports: 97.86 billion cu m (2011 est.)
Natural gas - proved reserves: 7.716 trillion cu m (1 January 2009 est.)
Carbon dioxide emissions from consumption of energy: 5.61 billion Mt (2010 est.)
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 Communications
Telephones in use: 146 million (2011) country comparison to the world: 2
Cellular Phones in use: 290.3 million (2011)
Telephone system:
general assessment: a large, technologically
advanced, multipurpose communications system domestic: a
large system of fiber-optic cable, microwave radio relay, coaxial cable,
and domestic satellites carries every form of telephone traffic; a
rapidly growing cellular system carries mobile telephone traffic
throughout the country international: country code - 1;
multiple ocean cable systems provide international connectivity;
satellite earth stations - 61 Intelsat (45 Atlantic Ocean and 16 Pacific
Ocean), 5 Intersputnik (Atlantic Ocean region), and 4 Inmarsat (Pacific
and Atlantic Ocean regions) (2011)
Broadcast media:
4 major terrestrial TV networks with affiliate
stations throughout the country, plus cable and satellite networks,
independent stations, and a limited public broadcasting sector that is
largely supported by private grants; overall, thousands of TV stations
broadcasting; multiple national radio networks with many affiliate
stations; while most stations are commercial, National Public Radio
(NPR) has a network of some 600 member stations; satellite radio
available; overall, nearly 15,000 radio stations operating (2008)
Internet country code: .us
Internet hosts:
505 million (2012); note - the US Internet total
host count includes the following top level domain host addresses: .us,
.com, .edu, .gov, .mil, .net, and .org
Internet users: 245 million (2009)
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 Transportation
Airports: 13,513 (2013) country comparison to the world: 1
Airports (paved runways): total 5,054

over 3,047 m: 189 2,438 to 3,047 m: 235
1,524 to 2,437 m: 1,478 914 to 1,523 m:
2,249 under 914 m: 903 (2013)
Airports (unpaved runways): total 8,459

over 3,047 m: 1 2,438 to 3,047 m: 6
1,524 to 2,437 m: 140 914 to 1,523 m: 1,552
under 914 m: 6,760 (2013)
Heliports: 5,287 (2013)
Pipelines: natural gas 1,984,321 km; petroleum products 240,711 km (2013)
Railways: total 224,792 km
standard gauge: 224,792 km 1.435-m gauge (2007)
Roadways: total 6,506,204 km

paved: 4,374,784 km (includes 75,238 km of
expressways) unpaved: 2,131,420 km (2008)
Waterways:
41,009 km (19,312 km used for commerce; Saint
Lawrence Seaway of 3,769 km, including the Saint Lawrence River of 3,058
km, is shared with Canada) (2012)
Merchant marine: total 393

by type: barge carrier 6, bulk carrier 55,
cargo 51, carrier 2, chemical tanker 30, container 84, passenger 18,
passenger/cargo 56, petroleum tanker 35, refrigerated cargo 3, roll
on/roll off 27, vehicle carrier 26 foreign-owned: 85
(Australia 1, Bermuda 5, Denmark 31, France 4, Germany 5, Malaysia 2,
Norway 17, Singapore 16, UK 4) registered in other countries:
794 (Antigua and Barbuda 7, Australia 2, Bahamas 109, Belgium 1,
Bermuda 26, Canada 10, Cayman Islands 57, Comoros 2, Cyprus 5, Georgia
1, Greece 8, Honduras 1, Hong Kong 44, Indonesia 2, Ireland 2, Isle of
Man 1, Italy 23, Liberia 53, Malta 34, Marshall Islands 200, Netherlands
16, Norway 10, Panama 90, Portugal 4, Saint Kitts and Nevis 1, Saint
Vincent and the Grenadines 18, Singapore 36, South Korea 8, Togo 1, UK
14, Vanuatu 2, unknown 6) (2010)
Ports and terminals:
cargo ports (tonnage): Baton Rouge, Corpus
Christi, Hampton Roads, Houston, Long Beach, Los Angeles, New Orleans,
New York, Plaquemines, Tampa, Texas City container ports (TEUs):
Los Angeles (7,849,985), Long Beach (6,350,125), New York/New
Jersey (5,265,058), Savannah (2,616,126), Oakland (2,236,244), Hampton
Roads (2,083,278) (2008) cruise departure ports (passengers):
Miami (2,032,000), Port Everglades (1,277,000), Port Canaveral
(1,189,000), Seattle (430,000), Long Beach (415,000) (2009) oil
terminals: LOOP terminal, Haymark terminal
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 Military

Military branches:
United States Armed Forces: US Army, US Navy
(includes Marine Corps), US Air Force, US Coast Guard; note - Coast
Guard administered in peacetime by the Department of Homeland Security,
but in wartime reports to the Department of the Navy (2013)
Military service age and obligation:
18 years of age (17 years of age with parental
consent) for male and female voluntary service; no conscription; maximum
enlistment age 42 (Army), 27 (Air Force), 34 (Navy), 28 (Marines);
service obligation 8 years, including 2-5 years active duty (Army), 2
years active (Navy), 4 years active (Air Force, Marines); DoD is
eliminating prohibitions restricting women from assignments in units
smaller than brigades or near combat units (2013)
Manpower available for military service: males age 16-49: 73,270,043 females age 16-49: 71,941,969 (2010 est.)
Manpower fit for military service: males age 16-49: 60,620,143 females age 16-49: 59,401,941 (2010 est.)
Manpower reaching militarily significant age annually: male: 2,161,727 female: 2,055,685 (2010 est.)
Military expenditures: 4.6% of GDP (2010)
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 Transnational Issues
Disputes - International:
the US has intensified domestic security
measures and is collaborating closely with its neighbors, Canada and
Mexico, to monitor and control legal and illegal personnel, transport,
and commodities across the international borders; abundant rainfall in
recent years along much of the Mexico-US border region has ameliorated
periodically strained water-sharing arrangements; 1990 Maritime Boundary
Agreement in the Bering Sea still awaits Russian Duma ratification;
Canada and the United States dispute how to divide the Beaufort Sea and
the status of the Northwest Passage but continue to work cooperatively
to survey the Arctic continental shelf; The Bahamas and US have not been
able to agree on a maritime boundary; US Naval Base at Guantanamo Bay
is leased from Cuba and only mutual agreement or US abandonment of the
area can terminate the lease; Haiti claims US-administered Navassa
Island; US has made no territorial claim in Antarctica (but has reserved
the right to do so) and does not recognize the claims of any other
states; Marshall Islands claims Wake Island; Tokelau included American
Samoa's Swains Island among the islands listed in its 2006 draft
constitution
Refugees and internally displaced persons:
refugees (country of origin): the US admitted
58,238 refugees during FY2012 including 15,070 (Bhutan); 14,160 (Burma);
12,163 (Iraq); 4,911 (Somalia); 1,948 (Cuba); 1,758 (Iran); 1,346
(Eritrea)
Illicit drugs:
world's largest consumer of cocaine (shipped from
Colombia through Mexico and the Caribbean), Colombian heroin, and
Mexican heroin and marijuana; major consumer of ecstasy and Mexican
methamphetamine; minor consumer of high-quality Southeast Asian heroin;
illicit producer of cannabis, marijuana, depressants, stimulants,
hallucinogens, and methamphetamine; money-laundering center

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