The Battle of Saratoga convinced France to enter a formal alliance with the American revolutionaries.
The Battles of Saratoga were fought in northern New York in 1777. American forces first checked and then defeated a British army commanded by John Burgoyne. The surrender of Burgoyne’s army demonstrated that the rebellion had a serious chance of defeating Britain.
France had already provided some secret aid, but Saratoga changed the diplomatic calculation. On February 6, 1778, France signed the Treaty of Alliance and the Treaty of Amity and Commerce with the United States. French money, weapons, troops, and naval power later became crucial to the American war effort.
Saratoga was not the final battle of the Revolution. The later Yorktown campaign produced the decisive British surrender in 1781. Saratoga’s importance was strategic and diplomatic: it helped transform the conflict from a colonial rebellion into an international war.