USA. (United States of America) is very famous and powerful country in the world. USA plays very powerful role in world's economy and politics. You need to know very basics about the United States of
America. Let's see,
Capital - Washington, D.C. (38°53′N 77°01′W)
Largest city - New York City (40°43′N 74°00′W)
Official languages - None at federal level
National language - English
Ethnic groups details According to (2016)
77.1% White
13.3% Black
5.6% Asian
2.6% Other/multiracial
1.2% Native
0.2% Pacific Islander
Ethnicity: 17.6% Hispanic or Latino
82.4% non-Hispanic or Latino
Religion details According to (2016)
73.7% Christian
18.2% Unaffiliated
2.1% Jewish
0.8% Muslim
2.5% Other
2.6% Unknown
Demonym American Government -
Federal presidential constitutional republic
President - Donald Trump
Vice President - Mike Pence
House Speaker - Paul Ryan
Chief Justice - John Roberts
Legislature - Congress
Upper house - Senate
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)
Water (%) - 6.97
Total land area - 3,531,905 sq mi (9,147,590 km2)
Population According to 2010 census -
308,745,538
Density
85/sq mi (32.8/km2)
GDP Total - $19.390 trillion
Per capita income - $59,501
Human Development Index (2017) -
very high 13th
Currency - United States dollar ($) (USD)
Time zone - UTC−4 to −12, +10, +11
Summer (DST)
UTC−4 to −10
Date format - mm/dd/yyyy
Driving side - right
Telephone Calling code - +1
ISO code - US
Internet Top Level Domain - .us
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