The United States of America (USA), commonly known as the United States (U.S. or US) or America, is a country composed of 50 states, a federal district, five major self-governing territories, and various possessions.[f] At 3.8 million square miles (9.8 million km2), the United States is the world’s third or fourth largest country by total area[g] and is slightly smaller than the entire continent of Europe’s 3.9 million square miles (10.1 million km2). With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the largest city by population is New York. Forty-eight states and the capital’s federal district are contiguous in North America between Canada and Mexico.
The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The United States of America are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world’s 17 mega diverse countries.
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United States of America
|Largest city||New York|
|Official languages||None at federal level|
|Ethnic groups(2017)[||By race:|
1.3% Native American
0.2% Pacific Islander
18.1% Hispanic or Latino
81.9% non-Hispanic or Latino
|Religion (2016)[||73.7% Christian|
|Government||Federal presidentialconstitutional republic|
|Lower house||House of Representatives|
|Independence from Great Britain|
|Declaration||July 4, 1776|
|Confederation||March 1, 1781|
|Treaty of Paris||September 3, 1783|
|Constitution||June 21, 1788|
|Last polity admitted||March 24, 1976|
|Total area||3,796,742 sq mi (9,833,520 km2)|
|Total land area||3,531,905 sq mi (9,147,590 km2)|
|Density||85/sq mi (32.8/km2)|
|GDP (PPP)||2018 estimate|
|GDP (nominal)||2018 estimate|
|Gini (2016)|| 39.1|
|HDI (2017)|| 0.924|
|Currency||United States dollar ($) (USD)|
|Time zone||UTC−4 to −12, +10, +11|
|Summer (DST)||UTC−4 to −10[|
|ISO 3166 code||US|
The United States of America contains a highly diverse population. Unlike a country such as China that largely incorporated indigenous peoples, the United States has a diversity that to a great degree has come from an immense and sustained global immigration. Probably no other country has a wider range of racial, ethnic, and cultural types than does the United States.
In addition to the presence of surviving Native Americans including American Indians, Aleuts, and Eskimos and the descendants of Africans taken as slaves to the New World, the national character has been enriched, tested, and constantly redefined by the tens of millions of immigrants who by and large have come to United States of America hoping for greater social, political, and economic opportunities than they had in the places they left.
It should be noted that although the terms “America” and “Americans” are often used as synonyms for the United States and its citizens, respectively, they are also used in a broader sense for North, South, and Central America collectively and their citizens.
The United States of America is the world’s greatest economic power, measured in terms of gross domestic product (GDP). The nation’s wealth is partly a reflection of its rich natural resources and its enormous agricultural output, but it owes more to the country’s highly developed industry. Despite its relative economic self-sufficiency in many areas, the United States is the most important single factor in world trade by virtue of the sheer size of its economy.
Its exports and imports represent major proportions of the world total. The United States also impinges on the global economy as a source of and as a destination for investment capital. The country continues to sustain an economic life that is more diversified than any other on Earth, providing the majority of its people with one of the world’s highest standards of living.
The United States of America is relatively young by world standards, being less than 250 years old; it achieved its current size only in the mid-20th century. America was the first of the European colonies to separate successfully from its motherland, and it was the first nation to be established on the premise that sovereignty rests with its citizens and not with the government. In its first century and a half, the country was mainly preoccupied with its own territorial expansion and economic growth and with social debates that ultimately led to civil war and a healing period that is still not complete. In the 20th century the United States emerged as a world power, and since World War II it has been one of the preeminent powers.
It has not accepted this mantle easily nor always carried it willingly; the principles and ideals of its founders have been tested by the pressures and exigencies of its dominant status. The United States of America still offers its residents opportunities for unparalleled personal advancement and wealth. However, the depletion of its resources, the contamination of its environment, and the continuing social and economic inequality that perpetuates areas of poverty and blight all threaten the fabric of the country.
The District of Columbia is discussed in the article Washington. For discussion of other major U.S. cities, see the articles Boston, Chicago, Los Angeles, New Orleans, New York City, Philadelphia, and San Francisco. Political units in association with the United States include Puerto Rico, discussed in the article Puerto Rico, and several Pacific islands, discussed in Guam, Northern Mariana Islands, and American Samoa.
Climate of United States of America (USA)
The land area of the entire United States of America is approximately 3,800,000 square miles (9,841,955 km2), with the contiguous United States making up 2,959,064 square miles (7,663,940.6 km2) of that. Alaska, separated from the contiguous United States by Canada, is the largest state at 663,268 square miles (1,717,856.2 km2).
Hawaii, occupying an archipelago in the central Pacific, southwest of North America, is 10,931 square miles (28,311 km2) in area. The populated territories of Puerto Rico, American Samoa, Guam, Northern Mariana Islands, and U.S. Virgin Islands together cover 9,185 square miles (23,789 km2). Measured by only land area, the United States is third in size behind Russia and China, just ahead of Canada.[
The United States of America is the world’s third- or fourth-largest nation by total area (land and water), ranking behind Russia and Canada and just above or below China. The ranking varies depending on how two territories disputed by China and India are counted, and how the total size of the United States is measured. The Encyclopaedia Britannica, for instance, lists the size of the United States as 3,677,649 square miles (9,525,067 km2), as they do not count the country’s coastal or territorial waters. The World Factbook, which includes those waters, gives 3,796,742 square miles (9,833,517 km2).
The coastal plain of the Atlantic seaboard gives way further inland to deciduous forests and the rolling hills of the Piedmont. The Appalachian Mountains divide the eastern seaboard from the Great Lakes and the grasslands of the Midwest. The Mississippi–Missouri River, the world’s fourth longest river system, runs mainly north–south through the heart of the country. The flat, fertile prairie of the Great Plains stretches to the west, interrupted by a highland region in the southeast.[
The United States of America has Rocky Mountains, at the western edge of the Great Plains, extend north to south across the country, reaching altitudes higher than 14,000 feet (4,300 m) in Colorado. Farther west are the rocky Great Basin and deserts such as the Chihuahua and Mojave. The Sierra Nevada and Cascade mountain ranges run close to the Pacific coast, both ranges reaching altitudes higher than 14,000 feet (4,300 m).
The lowest and highest points in the contiguous United States of America are in the state of California, and only about 84 miles (135 km) apart. At an elevation of 20,310 feet (6,190.5 m), Alaska’s Denali (Mount McKinley) is the highest peak in the country and North America. Active volcanoes are common throughout Alaska’s Alexander and Aleutian Islands, and Hawaii consists of volcanic islands. The super volcano underlying Yellowstone National Park in the Rockies is the continent’s largest volcanic feature. The United States has the most ecoregions out of any country in the world.
The United States of America, with its large size and geographic variety, includes most climate types. To the east of the 100th meridian, the climate ranges from humid continental in the north to humid subtropical in the south. The Great Plains west of the 100th meridian are semi-arid. Much of the Western mountains have an alpine climate. The climate is arid in the Great Basin, desert in the Southwest, Mediterranean in coastal California, and oceanic incoastal Oregon and Washington and southern Alaska.
Most of Alaska is subarctic or polar. Hawaii and the southern tip of Florida are tropical, as are the populated territories in the Caribbean and the Pacific. Extreme weather is not uncommon—the states bordering the Gulf of Mexico are prone to hurricanes, and most of the world’s tornadoes occur within the country, mainly in Tornado Alley areas in the Midwest and South.
List of Regions of United States of America (USA)
The table below lists the 50 states, with their current capital, largest city, the date they ratified the United States of America Constitution or were admitted to the Union, population and area data, and number of representative in the U.S. House of Representatives.
|Utah||UT||Salt Lake City|
|New Mexico||NM||Santa Fe|
|District of Columbia||DC|
|Northern Mariana Islands||MP|
|U.S. Virgin Islands||VI|
50 Popular Tourist Places Must Visit in United States of America (USA)
1. Grand Canyon National Park : Mile-deep landmark with panoramic vistas. Beyond its scenic overlooks, this mile-deep geologic wonder features hikes, mule rides & rafting.
2. Statue of Liberty National Monument : American icon in New York Harbor.Iconic National Monument opened in 1886, offering guided tours, a museum & city views.
3. Yosemite National Park : Go-to destination for outdoor activities.Iconic national park offers an array of options such as hiking among redwoods & river rafting.
4. Yellowstone National Park : Scenic wonder with geysers & wildlife.Renowned park since 1872 is home to mountains, animals & the world’s largest collection of geysers.
5. Central Park : Urban oasis with ballfields & a zoo.Sprawling park with pedestrian paths & ballfields, plus a zoo, carousel, boat rentals & a reservoir.
6. Disneyland Park : Famed amusement park with 8 themed lands in United States of America.Iconic amusement park featuring 8 themed “lands” with rides, shows & costumed characters.
7. Golden Gate Bridge : Iconic art deco span opened in 1937.Famed 4,200-ft. art deco suspension bridge open to car, bike & foot traffic.
8. Zion National Park : Vast area for hiking, camping & climbing.Home to Zion Canyon, this vast national park offers trails, climbing, camping & more.
10. Walt Disney World Resort : Famed theme parks, lodging, shops & more.Well-known attraction comprising large resorts, dining, shops & 4 theme parks with rides & shows.
11. Bryce Canyon National Park : Towering spires & a natural amphitheater.Park with overlooks & trails offering views of towering spires (hoodoos) & a natural amphitheater.
12. Empire State Building : 103-story landmark with observatories.Iconic, art deco office tower from 1931 with exhibits & observatories on the 86th & 102nd floors.
13. Universal Studios Hollywood : Big movie-themed amusement park in United States of America.Sprawling amusement park with a cinema theme, featuring rides, restaurants, shops & shows.
14. Arches National Park : Hiking & camping amid red rock vistas.Scenic area offering camping & a variety of hiking trails with red rock vistas & 2,500 stone arches.
15. Alcatraz Island : Notorious prison/historical attraction.Notorious prison & once home to Al Capone, now a museum with audio tour, accessible by ferry.
16. Grand Teton National Park : Varied outdoor activities & serene views.Tranquil spot with plenty of wildlife plus hiking, rafting & swimming among valleys & mountains.
17. Antelope Canyon : Unique sandstone geological formation in United States of America.Navajo Nation sandstone slot canyon, renowned for its undulating angles & light shafts.
18. Glacier National Park : Wilderness with 700+ miles of trails.More than 700 miles of trails in a vast park with diverse landscapes & abundant wildlife.
19. Monument Valley : Area with iconic red sandstone buttes.This famous natural area on the Navajo Nation Reservation features towering red sandstone buttes.
20. Magic Kingdom Park : Famed amusement park with 6 themed lands.Organized in 6 themed lands, this iconic attraction features rides, costumed characters & parades.
21. The Metropolitan Museum of Art : World-class art collection in United States of America.A grand setting for one of the world’s greatest collections of art, from ancient to contemporary.
22. Hawaiʻi Volcanoes National Park : Lava tubes, active volcanoes & craters.Unique destination to spot live lava flows, lava tubes & glowing craters is popular with tourists.
23. Rockefeller Center : Iconic Midtown business complex Famous complex that’s home to TV studios, plus a seasonal ice rink & giant Christmas tree. Las Vegas Strip Iconic street lined with flashy casinos Famous avenue known for its soaring, neon-lit casinos, hotels, restaurants & nightclubs.
24. Brooklyn Bridge : Landmark 19th-century bridge Beloved, circa-1883 landmark connecting Manhattan & Brooklyn via a unique stone-&-steel design.
25. Denali : North America’s tallest mountain 20,310-ft. mountain peak, the highest in North American, set in the vast Denali National Park.
26. Florida Keys : Islands known for snorkeling & Key West in United States of America.The Florida Keys are a string of tropical islands stretching about 120 miles off the southern tip of the U.S. state of Florida, between the Atlantic Ocean and Gulf of Mexico. They’re known as
27. Joshua Tree National Park : Desert destination with geologic wonders Renowned desert park draws campers & hikers with its geologic wonders & signature Joshua trees.
28. Bellagio Hotel and Casino : Luxury casino resort with pools & dining Luxe quarters in a ritzy casino resort offering outdoor pools, a spa & posh dining, plus live shows.
29. Fisherman’s Wharf Crab : Fisherman’s Wharf Crab stands, souvenir shops & sea lions Fisherman’s Wharf, on the northern waterfront, is one of the city’s busiest tourist areas. Souvenir shops and stalls selling crab and clam chowder in sourdough bread bowls appear at every turn
30. Theatre District Broadway & Chain eateries : The Theater District is the teeming heart of Midtown West in United States of America. In the pedestrian plazas of Times Square, costumed characters beckon to energetic crowds under the pulsing lights of towering digital
31. Death Valley National Park : Over 3.4 million acres of wilderness. Vast national park with over 3.4 million acres of desert & mountains for hiking, camping & biking.
32. Universal Orlando Resort : Theme park with movie-themed rides Large, well-known theme park featuring movie-themed rides & shows, plus hotels & restaurants.
33. Grand Canyon Village : Grand Canyon Village Canyon, hiking, and rafting Grand Canyon Village is a census-designated place located on the South Rim of the Grand Canyon, in Coconino County, Arizona, in the United States. Its population was 2,004 at the 2010 Census.
34. Times Square : Bright lights & Broadway shows Bustling destination in the heart of the Theater District known for bright lights, shopping & shows.
35. Denali National Park and Preserve : Vast area with wildlife & Denali. This 6 million-acre park with wildlife & tours is home to Denali, the nation’s highest peak in United States of America.
36. Epcot : Future World & World Showcase theme park Crowds flock to this educational Disney theme park to explore the future & other countries.
37. Lake Tahoe : Huge freshwater lake for water sports. The largest alpine lake in North America, this iconic vacation staple offers water sports & more.
38. South Beach Nightlife & Ocean Drive art Deco Hotels : South Beach is known for its beaches and the glamorous scene around its happening nightspots and celebrity-chef eateries. Chain stores and indie fashion shops line pedestrian shopping strip Lincoln
39. Redwood National and State Parks : Vast, imposing forest of redwood trees. Immense woodland system containing many towering redwood trees, with trails, campgrounds & more.
40. Hoover Dam : Dam taming the Colorado River since 1935 Depression-era engineering marvel offering tours & scenic views of the Colorado River & Lake Mead.
41. Canyon lands National Park : Vast, scenic attraction with 4 districts. Split by 2 rivers, this majestic park in 4 zones features sandstone spires & Island in the Sky mesa in United States of America.
42. Broadway Musical theater : The Lion King, and opera Broadway is a road in the U.S. state of New York. Broadway runs from State Street at Bowling Green for 13 mi through the borough of Manhattan and 2 mi through the Bronx, exiting north from the
43. The High Line : Park built into old elevated rail line Popular park 30 feet above street level on an old rail line, with river & city views.
44. Disney’s Animal Kingdom Theme Park : Exotic encounters, thrill rides & shows Jumbo wildlife park divided into 6 sections with animal encounters, thrill rides, safaris & shows.
45. Sequoia National Park : Giant trees, plus hiking & camping Sprawling park filled with immense sequoia trees & offering hiking, camping & other activities.
46. United States Capitol : Legendary home of the U.S. legislature in United States of America. Iconic, domed classical building housing the U.S. Senate & House of Representatives, open for tours.
47. Rocky Mountain National Park : Huge expanse of scenic, rugged terrain. Over 415 square miles of protected mountain terrain with a huge network of hiking trails & wildlife.
48. Everglades National Park : Wetlands with gators, birds & more.Tropical wetlands offering up-close views of gators, crocs, birds & more plus a 2-hour tram tour.
49. Universal Studios Florida : Big park with movie-themed attractions in United States of America. Famous. sprawling amusement park featuring movie-themed rides, attractions & entertainment.
50. Acadia National Park : Iconic park with a scenic landscape 47,000-acre park covering woodland, granite peaks & rocky shores, offering camping, hiking & more.