Final answer:
The Battle of Saratoga convinced the French to help the Americans in the American Revolutionary War.
Step-by-step explanation:
The name of the battle that convinced the French to help the Americans was the Battle of Saratoga. In this battle, which took place during the American Revolutionary War, the American forces won against the British. The American victory at Saratoga was a turning point in the war and it demonstrated to the French that the Americans had a good chance of winning their independence.
Learn more about The Battle of Saratoga and its significance in the American Revolutionary War