Which 1777 American victory persuaded France to form an alliance with the United States?

The Battle of Saratoga, more precisely the Saratoga campaign, produced the 1777 American victory that helped persuade France to form an alliance with the United States. British General John Burgoyne surrendered his army on October 17, 1777.

The campaign included major fighting at Freeman’s Farm on September 19 and Bemis Heights on October 7. American forces were commanded by General Horatio Gates, while Benedict Arnold played an important battlefield role before his later defection to Britain.

The American victory demonstrated that the Continental Army could defeat a major British force. France then signed the Treaty of Alliance and the Treaty of Amity and Commerce with the United States in February 1778.

French military and financial support became crucial during the later war. The alliance helped internationalize the conflict and contributed to the eventual American victory at Yorktown, where French land and naval forces supported the campaign.