Which alliance did the United States form with France after the 1777 Battle of Saratoga?

The United States formed the Franco-American alliance with France after the 1777 Battle of Saratoga.

The alliance was formalized by the Treaty of Alliance signed on February 6, 1778. France recognized the United States and agreed to provide military assistance against Great Britain. The agreement followed the Treaty of Amity and Commerce, which established commercial and diplomatic relations between the two countries.

French support included money, weapons, soldiers, and naval operations. French forces and ships played a crucial role in the Yorktown campaign, where the French navy helped prevent British reinforcements from reaching Cornwallis.

The alliance was the first formal treaty between the United States and another nation. It ended after the Treaty of Paris in 1783, although American relations with France later became strained during the French Revolution and the undeclared Quasi-War of the 1790s.