This timeline explores the westward expansion of the United States and its impact on Native American populations.
Louisiana Purchase
1803
The U.S. acquires a vast territory from France, setting the stage for westward expansion.
Indian Removal Act
1830s
The U.S. government forcibly relocates Native American tribes from their ancestral lands to Indian Territory (present-day Oklahoma).
Mexican-American War
1846 - 1848
The U.S. gains control of a significant amount of land, including present-day California, Arizona, New Mexico, Texas, and parts of Colorado, Kansas, Oklahoma, and Wyoming.
Sioux Wars and Other Conflicts
1850s - 1890s
The U.S. government engages in various conflicts with Native American tribes, including the Sioux Wars, leading to the forced assimilation and relocation of many Native Americans.