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.
Fort King George
The Yamasee War of 1715–1717 broke out. This war started because of grave injustices carried out by Carolina traders against their Native American clients. For many years the traders had been systematically cheating the Indians in the fur trade by using bogus weights and measures, applying tough credit standards, severely indebting Native American suppliers, and taking Indian slaves for unpaid debts. Finally, the Yamasee turned on South Carolina and nearly destroyed the colony. Virginia's support and Cherokee warriors helped deflect the Yamasee attacks. 
After the surviving Yamasee were expelled, they migrated to the St. Augustine area and cultivated a new alliance with the Spanish. South Carolina was left weak and vulnerable with no military buffer along its southern fringes, and the war alienated the Creek tribes to the west.