Who launched a surprise attack near the town of vincennes undermining British support in the west?

In 1778, the American Revolutionary War saw a surprise attack launched by George Rogers Clark near the town of Vincennes, which is located in present-day Indiana. This strategic move undermined British support in the western frontier, as Clark captured the British garrison there, significantly boosting American control and morale in the region. His successful campaign helped to secure the Northwest Territory for the United States.