In 1803 he invited the leaders on the local tribes to Vincennes where they signed a treaty recognizing American possession of the Vincennes tract, that had been captured by George Rogers Clark in the American Revolutionary War from the French.
He invited the leaders on the local tribes to Vincennes. This was in 1803. They signed a treaty. This treaty was recognizing American possession of the Vincennes tract. The Vincennes tract had been captured by George Rogers Clark in the American Revolutionary War from the French.