Major Territorial Acquisitions (U.S.)
North AmericaGeopoliticalMajor territorial acquisitions by the United States
natureA map of the US highlights the major territorial acquisitions such as the Extent of the US, 1,800 in states like Virginia, Alabama, and Michigan shaded in cream. Mexican Cession, 1,850 in states like California and Nevada are shaded light purple.
Extent of U.S., 1803 | Louisiana Purchase, 1803 | West Florida, 1810–1813 | British Cession, 1818 | East Florida, 1819 | Northern Maine, 1842 | Texas Annexation, 1845 | Oregon Country, 1846 | Mexican Cession, 1848 | Gadsden Purchase, 1853 | Alaska, 1867 | Hawaii, 1898 | Areas of serious concern | Areas of some concern | Stable terrain | Nonvegetated land | Iron Ore Mines | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alaska | 94.5% | 0.154% | |||||||||||||||
Arizona | 76.2% | 23.8% | 30.7% | 40.9% | 28.4% | ||||||||||||
Yukon | 100% | ||||||||||||||||
District of Columbia | 97.6% | 100% | |||||||||||||||
Florida | 98.3% | 99.0% | |||||||||||||||
Idaho | 99.8% | 12.7% | 87.3% | ||||||||||||||
New Hampshire | 99.9% | 100% | |||||||||||||||
Rhode Island | 97.7% | 95.0% | |||||||||||||||
Vermont | 99.9% | 2.39% | 97.6% | ||||||||||||||
Washington | 99.4% | 12.5% | 11.9% | 5.51% | |||||||||||||
Wyoming | 70.3% | 4.53% | 12.4% | 12.7% | 3.04% | 97.0% | |||||||||||
Nunavut | 0.587% | ||||||||||||||||
Montana | 82.4% | 17.6% | 5.14% | 83.8% | |||||||||||||
Maine | 82.4% | 16.6% | 0.171% | 80.4% | |||||||||||||
North Dakota | 57.6% | 42.4% | 92.0% | 8.03% | |||||||||||||
Kentucky | 99.9% | 1.37% | 98.6% | ||||||||||||||
Nova Scotia | 18.4% | ||||||||||||||||
Virginia | 99.5% | 25.7% | 74.1% | ||||||||||||||
Delaware | 98.0% | 99.3% | |||||||||||||||
Prince Edward Island | 96.6% | ||||||||||||||||
Saskatchewan | 11.6% | 38.7% | 49.7% | ||||||||||||||
Mississippi | 92.2% | 7.44% | 18.4% | 64.8% | 16.8% | ||||||||||||
West Virginia | 100% | 26.7% | 73.3% | ||||||||||||||
Nebraska | 100% | 94.5% | 5.51% | ||||||||||||||
Texas | 99.5% | 13.8% | 77.2% | 8.74% | |||||||||||||
Louisiana | 86.4% | 12.4% | 0.161% | 18.9% | 29.5% | ||||||||||||
Hawaii | 91.5% | 1.16% | |||||||||||||||
North Carolina | 99.2% | 99.4% | |||||||||||||||
Oregon | 99.8% | 0.146% | 13.9% | 59.9% | |||||||||||||
New Brunswick | 35.3% | 63.9% | |||||||||||||||
Alabama | 95.7% | 4.16% | 73.2% | 26.7% | |||||||||||||
New Mexico | 57.5% | 40.3% | 2.23% | 5.86% | 92.2% | 1.91% | |||||||||||
Kansas | 91.7% | 8.26% | 64.1% | 35.9% | |||||||||||||
British Columbia | 1.43% | 3.99% | 0.242% | ||||||||||||||
New Jersey | 99.0% | 99.1% | |||||||||||||||
South Carolina | 99.6% | 90.8% | 9.02% | ||||||||||||||
Alberta | 3.89% | 14.0% | 65.8% | ||||||||||||||
Connecticut | 99.6% | 1.86% | 98.1% | ||||||||||||||
Pennsylvania | 100% | 12.1% | 87.9% | ||||||||||||||
Colorado | 41.3% | 32.3% | 26.4% | 35.4% | 64.6% | ||||||||||||
Nevada | 99.9% | 54.5% | 39.8% | 0.655% | |||||||||||||
Massachusetts | 98.1% | 0.575% | |||||||||||||||
Georgia | 99.8% | 64.0% | 35.9% | ||||||||||||||
Maryland | 96.9% | 23.5% | 74.6% | ||||||||||||||
Manitoba | 5.67% | 12.3% | 81.9% | ||||||||||||||
Oklahoma | 91.6% | 8.45% | 31.0% | 69.0% | |||||||||||||
Tennessee | 99.9% | 4.84% | 95.2% | ||||||||||||||
Ontario | 8.22% | 91.7% | |||||||||||||||
Arkansas | 99.8% | 31.1% | 68.9% | ||||||||||||||
South Dakota | 99.1% | 56.9% | 43.1% | ||||||||||||||
Ohio | 100% | 100% | |||||||||||||||
Indiana | 100% | 2.05% | 97.9% | ||||||||||||||
Iowa | 99.8% | 99.1% | 0.440% | ||||||||||||||
Illinois | 99.7% | 96.6% | 3.35% | ||||||||||||||
Utah | 100% | 13.6% | 86.4% | 1 | |||||||||||||
Northwest Territories | 3.06% | 1 | |||||||||||||||
Missouri | 99.7% | 53.7% | 46.3% | 1 | |||||||||||||
Wisconsin | 99.8% | 41.4% | 38.2% | 20.4% | 2 | ||||||||||||
Newfoundland and Labrador | 24.7% | 1 | |||||||||||||||
Michigan | 99.9% | 70.3% | 29.6% | 13 | |||||||||||||
New York | 99.4% | 2.49% | 25.0% | 1 | |||||||||||||
Québec | 0.218% | 94.2% | 1 | ||||||||||||||
California | 99.7% | 10.6% | 60.7% | 22.9% | 5.57% | 1 | |||||||||||
Minnesota | 33.8% | 45.1% | 20.9% | 26.5% | 61.6% | 11.9% | 14 |
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