Which colonial leader helped form a Franco-American alliance in 1778?

Benjamin Franklin helped secure the Franco-American alliance, formalized in 1778 by the Treaty of Alliance between France and the United States. He served as a diplomat in France and played a key role in winning French support for the American Revolution. General Burgoyne fought for Britain, while John Adams and George Washington were not the main negotiators of this alliance.

AI-written and checked against the verified answer.