Final answer:
During the American Revolutionary War, Colonel Benedict Arnold led the Americans in an unsuccessful attempt to capture Quebec and form an alliance with the French Canadians against the British.
Step-by-step explanation:
The Americans who tried to take control of Canada and attack Quebec were led by Colonel Benedict Arnold. They invaded Canada in an attempt to form an alliance with the French Canadians against the British during the American Revolutionary War. However, their attempt to capture Quebec was unsuccessful, and they failed to convince the French Canadians to join their cause.