Britannica Sources used in this answer

Why did France form an alliance with the United States in 1778?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

American Revolution *The Surrender of Lord Cornwallis* (at Yorktown, Virginia, on October 19, 1781), oil on canvas by John Trumbull, completed in 1820; in the U.S. Capitol Rotunda, Washington, D.C. The painting captures the moment when major fighting during the American Revolution ended and the colonies achieved independence.

France formed an alliance with the United States in 1778 primarily to undermine the global position of Great Britain, its long-standing rival, following France's loss of its North American empire during the French and Indian War.1

While France initially maintained a stance of neutrality, it had been secretly providing the American colonies with loans and munitions since 1776. The American victory at the Battles of Saratoga in October 1777 served as the critical turning point, convincing the French government that the revolutionaries were capable of pursuing the war to a successful conclusion.12

Fearing that the British might offer peace terms to reconcile with the colonies, the French foreign minister, the comte de Vergennes, moved quickly to formalize the relationship. The resulting Franco-American Alliance provided the United States with essential military support, including naval forces and troops, which proved indispensable to the American victory at the Siege of Yorktown in 1781.1