United States
English: United States

United States of America

Motto: 
"E pluribus unum" (Latin) (traditional)[3]
"Out of many, one"
Location of the United States
Capital
Largest city
Official languagesNone at federal level[a]
National languageEnglish[b]
Demonym(s)American
GovernmentFederal presidential constitutional republic
• President
Donald Trump (R)
Mike Pence (R)
Nancy Pelosi (D)
John Roberts
Independence 
July 4, 1776
March 1, 1781
September 3, 1783
June 21, 1788
March 24, 1976
Area
• Total area
3,796,742 sq mi (9,833,520 km2)[c][5] (3rd/4th)
• Water (%)
6.97
• Total land area
3,531,905 sq mi (9,147,590 km2)
Population
• 2018 estimate
Increase327,167,434[6] (3rd)
• 2010 census
308,745,538[7]
• Density
87/sq mi (33.6/km2) (146th)
GDP (PPP)2018 estimate
• Total
$20.494 trillion[8] (2nd)
• Per capita
$62,606[8] (11th)
GDP (nominal)2018 estimate
• Total
$20.494 trillion (1st)
• Per capita
$62,606[8] (7th)
Gini (2016)Negative increase 41.5[9]
medium · 56th
HDI (2017)Increase 0.924[10]
very high · 13th
CurrencyUnited States dollar ($) (USD)
Time zoneUTC−4 to −12, +10, +11
• Summer (DST)
UTC−4 to −10
Calling code+1
ISO 3166 codeUS
Internet TLD.us .gov .mil .edu

The United States of America is a federal republic[11][12] consisting of fifty states and a federal district, as well as some territories.[13] It is commonly called the United States (US, USA, U.S. or U.S.A.) and America. The country is located mostly in central North America, where its forty-eight touching states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to its east and Russia to the west across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses some territories, or insular areas, in the Caribbean and Pacific.

At 3.79 million square miles (9.83 million km2) and with about 306 million people, the United States is the third or fourth-largest country by total area and third-largest by land area and by population. The United States is one of the world's most ethnically mixed and multicultural nations, the product of large-scale immigration from many countries.[14] The U.S. economy is the largest national economy in the world, with an estimated 2016 gross domestic product (GDP) of US$20.4 trillion (about a quarter of worldwide GDP).[15]

The nation was founded by thirteen colonies of Great Britain located along the Atlantic seaboard. On July 4, 1776, they issued the Declaration of Independence, which announced their independence from Great Britain and their creation of a cooperative union. The disobedient states defeated Great Britain in the American Revolutionary War, the first successful colonial war of independence.[16] The Philadelphia Convention adopted the current United States Constitution on September 17, 1787; its approval the following year made the states part of a single republic with a strong central government. The Bill of Rights, making up ten constitutional amendments guaranteeing many basic civil rights and freedoms, was approved in 1791.

In the 19th century, the United States received land from France, Spain, the United Kingdom, Mexico, and Russia, and took over the Republic of Texas and the Republic of Hawaii. Arguments between the farming-based South and industrial North over states' rights and the growth of the institution of slavery began the American Civil War of the 1860s. The North's victory prevented a permanent split of the country and led to the end of legal slavery in the United States. By the 1870s, the national wealth was the world's largest.[17] The Spanish–American War and World War I confirmed the country's status as a military power. In 1945, the United States came out from World War II as the first country with nuclear weapons, a permanent member of the United Nations Security Council, and a founding member of NATO. The end of the Cold War and the breaking up of the Soviet Union left the United States as the only superpower. The country accounts for about half of worldwide military spending and is a leading economic, political, and cultural force in the world.[18]

Geography and environment

Satellite imagery of the contiguous United States.

The land area of the contiguous United States is 2,959,064 square miles (7,663,941 km2). Alaska, separated from the contiguous United States by Canada, is the largest state at 663,268 square miles (1,717,856 km2). Hawaii, occupying an archipelago in the central Pacific, southwest of North America, is 10,931 square miles (28,311 km2) in area.[19] The United States is the world's third- or fourth-largest nation by total area (land and water), ranking behind Russia and Canada and just above or below China. The ranking differs depending on how two territories disputed by China and India are counted, and how the total size of the United States is measured.[c] The Encyclopædia Britannica, for instance, lists the size of the United States as 3,677,649 square miles (9,525,067 km2), as they do not count the country's coastal or territorial waters.[20] The World Factbook, which includes those waters, gives 3,796,742 square miles (9,833,517 km2).[21]

The U.S's geography varies a lot and includes:

The United States, with its large size and geographical variety, includes most climate types. To the east of the 100th meridian, the climate ranges from humid continental in the north to humid subtropical in the south. The southern tip of Florida is tropical, as is Hawaii. The Great Plains west of the 100th meridian are semi-dry. Much of the Western mountains are alpine. The climate is dry in the Great Basin, desert in the Southwest, Mediterranean in coastal California, and oceanic in coastal Oregon and Washington and southern Alaska. Most of Alaska is subarctic or polar. Extreme weather is not unusual—the states bordering the Gulf of Mexico are prone to hurricanes, and most of the world's tornadoes happen within the country, mainly in the Midwest's Tornado Alley.[22]

Other Languages
Alemannisch: USA
አማርኛ: አሜሪካ
aragonés: Estatos Unitos
arpetan: Ètats-Unis
Aymar aru: Istadus Unidus
Bân-lâm-gú: Bí-kok
Basa Banyumasan: Amerika Serikat
беларуская (тарашкевіца)‎: Злучаныя Штаты Амэрыкі
भोजपुरी: अमेरिका
Bikol Central: Estados Unidos
Chavacano de Zamboanga: Estados Unidos de America
Chi-Chewa: United States
chiTumbuka: United States
dansk: USA
Deitsch: Amerikaa
ދިވެހިބަސް: އެމެރިކާ
emiliàn e rumagnòl: Stat Unî
English: United States
español: Estados Unidos
Esperanto: Usono
estremeñu: Estaus Uníus
eʋegbe: United States
Fiji Hindi: United States
føroyskt: USA
français: États-Unis
贛語: 美國
Gĩkũyũ: United States
𐌲𐌿𐍄𐌹𐍃𐌺: 𐌰𐌼𐌰𐌹𐍂𐌹𐌺𐌰
गोंयची कोंकणी / Gõychi Konknni: अमेरिकेचीं संयुक्त राज्यां
客家語/Hak-kâ-ngî: Mî-koet
한국어: 미국
Bahasa Hulontalo: Amerika Serikat
Ido: Usa
বিষ্ণুপ্রিয়া মণিপুরী: তিলপারাষ্ট্র
Bahasa Indonesia: Amerika Serikat
ᐃᓄᒃᑎᑐᑦ/inuktitut: ᐊᒥᐊᓕᑲ
isiZulu: IMelika
íslenska: Bandaríkin
Kabɩyɛ: Etaazuunii
kalaallisut: Naalagaaffeqatigiit
Kapampangan: Estados Unidos
kernowek: Statys Unys
Kiswahili: Marekani
Kreyòl ayisyen: Etazini
Lingua Franca Nova: Statos Unida de America
Livvinkarjala: Amerikan Yhtysvallat
la .lojban.: mergu'e
Luganda: Amerika
Malagasy: Etazonia
مصرى: امريكا
Bahasa Melayu: Amerika Syarikat
Minangkabau: Amerika Sarikat
Mìng-dĕ̤ng-ngṳ̄: Mī-guók
Dorerin Naoero: Eben Merika
Na Vosa Vakaviti: United States
Nederlands: Verenigde Staten
Nēhiyawēwin / ᓀᐦᐃᔭᐍᐏᐣ: ᑭᐦᒋ ᒨᐦᑯᒫᓇᐢᑭᕀ
Norfuk / Pitkern: Yunitid Staits o' Merika
norsk: USA
norsk nynorsk: USA
oʻzbekcha/ўзбекча: Amerika Qoʻshma Shtatlari
Pangasinan: Estados Unidos
پنجابی: امریکہ
ភាសាខ្មែរ: សហរដ្ឋអាមេរិក
Tok Pisin: Ol Yunaitet Stet
Plattdüütsch: USA
português: Estados Unidos
reo tahiti: Fenua Marite
rumantsch: Stadis Unids
ᱥᱟᱱᱛᱟᱲᱤ: ᱥᱮᱞᱮᱫ ᱯᱚᱱᱚᱛ
Sesotho sa Leboa: United States of America
Setswana: USA
sicilianu: Stati Uniti
slovenčina: Spojené štáty
словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ: Амєрїканьскꙑ Ѥдьнѥнꙑ Дрьжавꙑ
Sranantongo: Kondre Makandrameki
srpskohrvatski / српскохрватски: Sjedinjene Američke Države
svenska: USA
ไทย: สหรัฐ
Tsetsêhestâhese: United States
Twi: Amerika
Thuɔŋjäŋ: Pawuut Matiic
Vahcuengh: Meijgoz
Tiếng Việt: Hoa Kỳ
Volapük: Lamerikän
文言: 美國
吴语: 美国
Xitsonga: Amerikha
粵語: 美國
žemaitėška: JAV
中文: 美国