Section #5 - Statistical Tables
U.S. Landmass
Development of America’s Landmass
After the Revolutionary War, America continues to expand westward, finally reaching the
west coast after victory in the Mexican War.
1.0 Expansion Of America’s Land Mass
| Year | Land Gained | From | Via | Square Miles | % US |
|---|---|---|---|---|---|
| 1784 | 13 colonies to Miss R | Britain | War | 888,811 | 29% |
| 1803 | Louisiana Territory | France | Buy | 827,192 | 27 |
| 1819 | Florida | Spain | Buy | 72,003 | 2 |
| 1845 | Texas Territories | Mexico | Annex | 390,144 | 13 |
| 1846 | Oregon Territories | Britain | Buy | 285,580 | 10 |
| 1848 | Mexico Cession | Mexico | War | 529,017 | 18 |
| 1853 | Gadsden Purchase | Mexico | Buy | 29,640 | 1 |
| Total (48 states) | 3,022,387 | 100% |
1.1 Map of Major Expansion Phases
