Which American Revolution battle helped bring France into the war as a U.S. ally?

The Battle of Saratoga helped bring France into the American Revolution as a U.S. ally.

The Battles of Saratoga took place in New York in September and October 1777. American forces under General Horatio Gates defeated a British army commanded by General John Burgoyne, who surrendered on October 17.

The victory demonstrated that the Continental Army could defeat a major British force. It persuaded France that the American cause had a realistic chance of success, encouraging the Treaty of Alliance signed in February 1778.

French military aid, loans, supplies, troops, and naval support became crucial to the American war effort. French assistance contributed directly to later operations, including the Yorktown campaign. Saratoga was not the final battle of the Revolution, but it was a major strategic and diplomatic turning point.