Fort Detroit the Native Americans to trap and hunt, as well as rendering them less of a threat. The British colonists did not emphasize maintaining good relationships with the Native Americans. But the French Canadians had formed many families through intermarriage and knew about the Native American custom of giving gifts. After the French left the conflict, Pontiac war-leader of the Ottawa, rallied several tribes in Pontiac's Rebellion. He attempted to capture Detroit from the British on May 7, 1763. They failed to capture the fort, as the British were forewarned of the attack, but did lay siege to it (see the
Illinois campaign the region. When the American Revolutionary War began, in 1775, the Ohio River marked the border between the Illinois Country and Kentucky, an area recently settled by American colonists. The British had originally sought to keep American Indians out of the war, but in 1777 Lieutenant Governor Hamilton received instructions to recruit and arm Indian war parties to raid the Kentucky settlements, opening a western front in the war with the rebel colonists. "From 1777 on," wrote historian Bernard Sheehan, "the line of western settlements was under almost constant assault by white-led [Indian] raiding parties that had originated at Detroit."