international: country code - 44; numerous submarine cables provide

links throughout Europe, Asia, Australia, the Middle East, and US;

satellite earth stations - 10 Intelsat (7 Atlantic Ocean and 3

Indian Ocean), 1 Inmarsat (Atlantic Ocean region), and 1 Eutelsat;

at least 8 large international switching centers

Broadcast media:

public service broadcaster BBC is the largest broadcasting

corporation in the world; BBC operates multiple TV networks with

regional and local TV service; a mixed system of public and

commercial TV broadcasters along with satellite and cable systems

provide access to hundreds of TV stations throughout the world; BBC

operates multiple national, regional, and local radio networks with

multiple transmission sites; a large number of commercial radio

stations as well as satellite radio services are available (2008)

Internet country code:

.uk

Internet hosts:

7.03 million (2010)

country comparison to the world: 14

Internet users:

51.444 million (2009)

country comparison to the world: 7

Transportation ::United Kingdom

Airports:

505 (2010)

country comparison to the world: 14

Airports - with paved runways:

total: 306

over 3,047 m: 9

2,438 to 3,047 m: 32

1,524 to 2,437 m: 124

914 to 1,523 m: 77

under 914 m: 64 (2010)

Airports - with unpaved runways:

total: 199

over 3,047 m: 1

1,524 to 2,437 m: 3

914 to 1,523 m: 22

under 914 m: 173 (2010)

Heliports:

11 (2010)

Pipelines:

condensate 43 km; gas 7,992 km; liquid petroleum gas 59 km; oil 699

km; refined products 4,417 km (2009)

Railways:

total: 16,454 km

country comparison to the world: 17

broad gauge: 303 km 1.600-m gauge (in Northern Ireland)

standard gauge: 16,151 km 1.435-m gauge (5,248 km electrified) (2008)

Roadways:

total: 394,428 km

country comparison to the world: 16

paved: 394,428 km (includes 3,519 km of expressways) (2009)

Waterways:

3,200 km (620 km used for commerce) (2008)

country comparison to the world: 32

Merchant marine:

total: 527

country comparison to the world: 22

by type: bulk carrier 30, cargo 70, carrier 3, chemical tanker 71,

container 190, liquefied gas 10, passenger 7, passenger/cargo 67,

petroleum tanker 20, refrigerated cargo 6, roll on/roll off 29,

vehicle carrier 24

foreign-owned: 292 (US 11)

registered in other countries: 275 (Algeria 12, Antigua and Barbuda

2, Argentina 2, Australia 5, Bahamas 24, Barbados 7, Belgium 2,

Belize 4, Bermuda 11, Cambodia 3, Cape Verde 2, Cayman Islands 2,

Comoros 1, Cook Islands 2, Cyprus 7, Georgia 4, Gibraltar 4, Greece

27, Honduras 1, Hong Kong 27, Italy 2, Liberia 44, Libya 1,

Luxembourg 5, Malta 16, Marshall Islands 9, Moldova 6, Nigeria 2,

Panama 44, Saint Kitts and Nevis 2, Saint Vincent and the Grenadines

7, Sierra Leone 1, Singapore 6, Thailand 6, Togo 3, Tonga 1, US 4,

unknown 1) (2010)

Ports and terminals:

Dover, Felixstowe, Immingham, Liverpool, London, Southampton,

Teesport (England); Forth Ports, Hound Point (Scotland); Milford

Haven (Wales)

Military ::United Kingdom

Military branches:

Army, Royal Navy (includes Royal Marines), Royal Air Force (2010)

Military service age and obligation:

16-33 years of age (officers 17-28) for voluntary military service

(with parental consent under 18); women serve in military services,

but are excluded from ground combat positions and some naval

postings; as of October 2009, women comprised 12.1% of officers and

9% of enlisted personnel in the regular forces; must be citizen of

the UK, Commonwealth, or Republic of Ireland; reservists serve a

minimum of 3 years, to age 45 or 55; 16 years of age for voluntary

military service by Nepalese citizens in the Brigade of Gurkhas;

16-34 years of age for voluntary military service by Papua New

Guinean citizens (2009)

Manpower available for military service:

males age 16-49: 14,732,445

females age 16-49: 14,118,320 (2010 est.)

Manpower fit for military service:

males age 16-49: 12,113,310

females age 16-49: 11,604,784 (2010 est.)

Manpower reaching militarily significant age annually:

male: 386,492

female: 369,185 (2010 est.)

Military expenditures:

2.4% of GDP (2005 est.)

country comparison to the world: 63

Transnational Issues ::United Kingdom

Disputes - international:

in 2002, Gibraltar residents voted overwhelmingly by referendum to

reject any "shared sovereignty" arrangement between the UK and

Spain; the Government of Gibraltar insists on equal participation in

talks between the two countries; Spain disapproves of UK plans to

grant Gibraltar greater autonomy; Mauritius and Seychelles claim the

Chagos Archipelago (British Indian Ocean Territory), and its former

inhabitants since their eviction in 1965; most Chagossians reside in

Mauritius, and in 2001 were granted UK citizenship, where some have

since resettled; in May 2006, the High Court of London reversed the

UK Government's 2004 orders of council that banned habitation on the

islands; UK rejects sovereignty talks requested by Argentina, which

still claims the Falkland Islands (Islas Malvinas) and South Georgia

and the South Sandwich Islands; territorial claim in Antarctica

(British Antarctic Territory) overlaps Argentine claim and partially

overlaps Chilean claim; Iceland, the UK, and Ireland dispute

Denmark's claim that the Faroe Islands' continental shelf extends

beyond 200 nm

Illicit drugs:

producer of limited amounts of synthetic drugs and synthetic

precursor chemicals; major consumer of Southwest Asian heroin, Latin

American cocaine, and synthetic drugs; money-laundering center

page last updated on January 20, 2011

======================================================================

@United States (North America)

Introduction ::United States

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. Over a span of more than five decades, the

economy has achieved steady growth, low unemployment and inflation,

and rapid advances in technology.

Geography ::United States

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

Map references:

North America

Area:

total: 9,826,675 sq km

country comparison to the world: 3

land: 9,161,966 sq km

water: 664,709 sq km

note: includes only the 50 states and District of Columbia

Area - comparative:

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 6,194 m

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, 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: 18.01%

permanent crops: 0.21%

other: 81.78% (2005)

Irrigated land:

223,850 sq km (2003)

Total renewable water resources:

3,069 cu km (1985)

Freshwater withdrawal (domestic/industrial/agricultural):

total: 477 cu km/yr (13%/46%/41%)

per capita: 1,600 cu m/yr (2000)

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: the United States experiences volcanic activity in the

Hawaiian Islands, Western Alaska, the Pacific Northwest, and in the

Northern Mariana Islands; both Mauna Loa (elev. 4,170 m, 13,678 ft)

in Hawaii and Mount Rainier (elev. 4,392 m, 14,409 ft) 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, 8,264 ft) 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, 8,363 ft),

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

Environment - current issues:

air pollution resulting in acid rain in both the US and Canada; the

US is the largest single emitter of carbon dioxide from the burning

of fossil fuels; water pollution from runoff of pesticides and

fertilizers; limited natural fresh water resources in much of the

western part of the country require careful management;

desertification

Environment - international 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

Geography - note:

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

People ::United States

Population:

310,232,863 (July 2010 est.)

country comparison to the world: 3

Age structure:

0-14 years: 20.2% (male 31,639,127/female 30,305,704)

15-64 years: 67% (male 102,665,043/female 103,129,321)

65 years and over: 12.8% (male 16,901,232/female 22,571,696) (2010

est.)

Median age:

total: 36.8 years

male: 35.5 years

female: 38.1 years (2010 est.)

Population growth rate:

0.97% (2010 est.)

country comparison to the world: 121

Birth rate:

13.83 births/1,000 population (2010 est.)

country comparison to the world: 150

Death rate:

8.38 deaths/1,000 population (July 2010 est.)

country comparison to the world: 90

Net migration rate:

4.25 migrant(s)/1,000 population (2010 est.)

country comparison to the world: 22

Urbanization:

urban population: 82% of total population (2008)

rate of urbanization: 1.3% annual rate of change (2005-10 est.)

Sex ratio:

at birth: 1.047 male(s)/female

under 15 years: 1.04 male(s)/female

15-64 years: 1 male(s)/female

65 years and over: 0.75 male(s)/female

total population: 0.97 male(s)/female (2010 est.)

Infant mortality rate:

total: 6.14 deaths/1,000 live births

country comparison to the world: 177

male: 6.81 deaths/1,000 live births

female: 5.44 deaths/1,000 live births (2010 est.)

Life expectancy at birth:

total population: 78.24 years

country comparison to the world: 49

male: 75.78 years

female: 80.81 years (2010 est.)

Total fertility rate:

2.06 children born/woman (2010 est.)

country comparison to the world: 125

HIV/AIDS - adult prevalence rate:

0.6% (2007 est.)

country comparison to the world: 70

HIV/AIDS - people living with HIV/AIDS:

1.2 million (2007 est.)

country comparison to the world: 9

HIV/AIDS - deaths:

22,000 (2007 est.)

country comparison to the world: 21

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

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.)

Languages:

English 82.1%, Spanish 10.7%, other Indo-European 3.8%, Asian and

Pacific island 2.7%, other 0.7% (2000 census)

note: Hawaiian is an official language in the state of Hawaii

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: 16 years

male: 15 years

female: 17 years (2008)

Education expenditures:

5.5% of GDP (2007)

country comparison to the world: 46

Government ::United States

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 units: 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 (from Great Britain)

National holiday:

Independence Day, 4 July (1776)

Constitution:

17 September 1787, effective 4 March 1789

Legal system:

federal court system based on English common law; each state has its

own unique legal system of which all but one (Louisiana, which is

still influenced by the Napoleonic Code) is based on English common

law; judicial review of legislative acts; has not accepted

compulsory ICJ jurisdiction

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 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 4 November 2008 (next to be

held on 6 November 2012)

election results: Barack H. OBAMA elected president; percent of

popular vote - Barack H. OBAMA 52.4%, John MCCAIN 46.3%, other 1.3%;

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 2 November 2010 (next to be held in

November 2012); House of Representatives - last held on 2 November

2010 (next to be held in November 2012)

election results: Senate - percent of vote by party - NA; seats by

party - Democratic Party 51, Republican Party 47, independent 2;

House of Representatives - percent of vote by party - NA; seats by

party - Democratic Party 192, Republican Party 243

Judicial branch:

Supreme Court (nine justices; nominated by the president and

confirmed with the advice and consent of the Senate; appointed to

serve for life); United States Courts of Appeal; United States

District Courts; State and County Courts

Political parties and leaders:

Democratic Party [Timothy KAINE]; Green Party; Libertarian Party

[William (Bill) REDPATH]; Republican Party [Reince PRIEBUS]

Political pressure groups and leaders:

environmentalists; business groups; labor unions; churches; ethnic

groups; political action committees or PAC; 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, CERN (observer), CICA

(observer), CP, EAPC, EBRD, FAO, FATF, G-20, G-5, G-7, G-8, G-10,

IADB, IAEA, IBRD, ICAO, ICC, ICRM, IDA, IEA, IFAD, IFC, IFRCS, IHO,

ILO, IMF, IMO, IMSO, Interpol, IOC, IOM, ISO, ITSO, ITU, ITUC, MIGA,

MINUSTAH, MONUSCO, NAFTA, NATO, NEA, NSG, OAS, OECD, OPCW, OSCE,

Paris Club, PCA, PIF (partner), SAARC (observer), SECI (observer),

SPC, UN, UN Security Council, UNCTAD, UNESCO, UNHCR, UNITAR, UNMIL,

UNRWA, UNTSO, UPU, WCO, WHO, WIPO, WMO, WTO, ZC

Flag description:

13 equal horizontal stripes of red (top and bottom) alternating with

white; there is a blue rectangle in the upper hoist-side corner

bearing 50 small, white, five-pointed stars arranged in nine offset

horizontal rows of six stars (top and bottom) alternating with rows

of five stars; the 50 stars represent the 50 states, the 13 stripes

represent the 13 original colonies; the blue stands for loyalty,

devotion, truth, justice, and friendship; red symbolizes courage,

zeal, and fervency, while white denotes purity and rectitude of

conduct; commonly referred to by its nickname of Old Glory

note: the design and colors have been the basis for a number of

other flags, including Chile, Liberia, Malaysia, and Puerto Rico

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

Economy ::United States

Economy - overview:

The 2010 CIA World Factbook · 第 209 / 461 段