Overview
Westward Expansion allowed for the United States to become much larger, but it was also a factor in the southern states' loss of power in government.
Expansion
Louisiana Purchase
Map of the Louisiana Purchase of 1803
- Thomas Jefferson purchased the Louisiana Territory from Napoleon Bonaparte
- doubled the size of the United States
Oregon Territory
Map of the Oregon Territory
- a purchase from Great Britain in 1846
Mexican Cession
Map of the Mexican Cession
- a region of the present day southwestern U.S.
- Mexico ceded to the U.S. in the Treaty of Guadalupe Hidalgo in 1848