The following outline is provided as an overview of and topical guide to the United States:
United States of America - federal republic located primarily in North America, and the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With the Soviet Union's collapse and the subsequent end of the Cold War in 1991, the United States emerged as the world's sole superpower.
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See main article: Geography of the United States.
Canada 8,893 km (5,525 mi)
308,745,538 (2010 census) – 3rd most populous country
9826630km2 – 4th most extensive country
See main article: Environment of the United States.
See main article: Landforms of the United States.
See main article: List of regions of the United States.
The geography of the United States varies across their immense area. Within the continental U.S., eight distinct physiographic divisions exist, though each is composed of several smaller physiographic subdivisions.[2] These major divisions are:
See main article: U.S. state and Administrative division. At the Declaration of Independence, the United States consisted of 13 states, former colonies of the United Kingdom. In the following years, the number of states has grown steadily due to expansion to the west, conquest and purchase of lands by the American government, and division of existing states to the current number of 50 United States:[3]
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See main article: Territories of the United States.
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
AS – GU – MP – PR – VI
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
AS – GU – MP – PR – VI
See main article: List of presidents of the United States.
See main article: President of the United States.
1789–1797
1797–1801
1801–1809
1809–1817
1817–1825
1825–1829
1829–1837
1837–1841
1841
1841–1845
1845–1849
1849–1850
1850–1853
1853–1857
1857–1861
1861–1865
1865–1869
1869–1877
1877–1881
1881
1881–1885
1885–1889
1889–1893
1893–1897
1897–1901
1901–1909
1909–1913
1913–1921
1921–1923
1923–1929
1929–1933
1933–1945
1945–1953
1953–1961
1961–1963
1963–1969
1969–1974
1974–1977
1977–1981
1981–1989
1989–1993
1993–2001
2001–2009
2009–2017
2017–2021
2021–present
See main article: Government of the United States.
presidential, federal republic
See main article: Federal government of the United States.
See main article: United States federal executive departments.
All departments are listed by their present-day name and only departments with past or present cabinet-level status are listed. Order of succession applies only to within the cabinet; the vice president has always been first in the line of succession, and the Speaker of the House and the President pro tem of the Senate have at times been included.
Department | Creation | Order of succession | Modifications since creation | 2007 Budget in billions of dollars | Employees (2007) | ||||
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nowrap | State | 1789 | align=right | 1 | Initially named "Department of Foreign Affairs" | align= right nowrap | 9.96 | align=center | 30,266 |
nowrap | Treasury | 1789 | align=right | 2 | align= right nowrap | 11.10 | align=center | 115,897 | |
nowrap | Defense | 1947 | align=right | 3 | Initially named "National Military Establishment" | align= right nowrap | 439.30 | align=center | 3,000,000 |
nowrap | Justice | 1870 | align=right | 4 | Position of Attorney General created in 1789, but had no department until 1870 | align= right nowrap | 23.40 | align=center | 112,557 |
nowrap | Interior | 1849 | align=right | 5 | align= right nowrap | 10.70 | align=center | 71,436 | |
nowrap | Agriculture | 1889 | align=right | 6 | align= right nowrap | 77.60 | align=center | 109,832 | |
Commerce | 1903 | align=right | 7 | Originally named Commerce and Labor; Labor later separated | align= right nowrap | 6.20 | align=center | 36,000 | |
nowrap | Labor | 1913 | align=right | 8 | align= right nowrap | 59.70 | align=center | 17,347 | |
nowrap | Health and Human Services | 1953 | align=right | 9 | Originally named Health, Education, and Welfare; Education later separated | align= right nowrap | 543.20 | align=center | 67,000 |
nowrap | Housing and Urban Development | 1965 | align=right | 10 | align= right nowrap | 46.20 | align=center | 10,600 | |
nowrap | Transportation | 1966 | align=right | 11 | align=right nowrap | 58.00 | align=center | 58,622 | |
nowrap | Energy | 1977 | align=right | 12 | align=right nowrap | 21.50 | align=center | 116,100 | |
nowrap | Education | 1979 | align=right | 13 | align=right nowrap | 62.80 | align=center | 4,487 | |
nowrap | Veterans Affairs | 1989 | align=right | 14 | align=right nowrap | 73.20 | align=center | 235,000 | |
nowrap | Homeland Security | 2002 | align=right | 15 | align=right nowrap | 44.60 | align=center | 208,000 | |
Total budget (fiscal year 2007): | align=right nowrap | 1,523.42 | align=center | 4,193,144 |
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
AS – GU – MP – PR – VI
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
See main article: Foreign relations of the United States.
See main article: International organization membership of the United States.
See main article: United States Armed Forces.
See main article: United States Intelligence Community.
See main article: Law of the United States.
See main article: Culture of the United States.
See main article: Music in the United States.
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
See main article: Radio in the United States.
See main article: Sports in the United States.
See main article: Major professional sports leagues in the United States and Canada.
See main article: College athletics in the United States.
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
See main article: Lists of schools in the United States.
See also: Educational attainment in the United States.
AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
AS – GU – MP – PR – VI
See main article: Economy of the United States.
The United States is the world's largest economy (IMF, 2010). |
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AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO - MS
MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY
See main article: Tourism in the United States.