Yuma Crossing
Immediately after the Mexican–American War in 1848, the U.S. Army built Fort Yuma here to protect travelers from Indians raiding the area. It was the center point of conflict in the Yuma War of 1850–53. From 1864–1890, the fort and nearby facilities was the main army base to support the US Army's efforts to control the Indians throughout the greater southwest.
Slavery among Native Americans in the United States
The slave trade of Native Americans lasted only until around 1730. It gave rise to a series of devastating wars among the tribes, including the Yamasee War. The Indian Wars of the early 18th century, combined with the increasing importation of African slaves, effectively ended the Native American slave trade by 1750. Colonists found that Native American slaves could easily escape, as they knew the country. The wars cost the lives of numerous colonial slave traders and disrupted their early societies. The remaining Native American groups banded together to face the Europeans from a position of strength. Many surviving Native American peoples of the southeast strengthened their loose coalitions of language groups and joined confederacies such as the Choctaw, the Creek, and the Catawba for protection.