U.S. Territorial Expansion Summary Discussion

 

  1. Louisiana Purchase (1803)
  2. British Cession (1818)- 49th Parallel
  3. Florida (Adams-Onís Treaty) (1818/19)
  4. Texas Annexation (1845)
  5. Oregon Territory (1846)
  6. Mexican Cession (1848)
  7. The Gadsden Purchase (1854)