 At the time of the American Revolution, many Native American tribes had long-standing relationships with British who were loyal to the British Empire, but they had a less-developed relationship with the Empire's colonists-turned-rebels.After the defeat of the British, the Americans twice invaded the Ohio Country and were twice defeated.They finally defeated the Indian Western Confederacy at the Battle of Fallen Timbers in 1794 and imposed the Treaty of Greenville, which ceded most of what is now Ohio, part of present-day Indiana, and the lands that include present-day Chicago and Detroit, to the United States federal government.