The Treaty of Paris ending the American Revolutionary War was signed in 1783.
The agreement was signed on September 3, 1783, formally ending the war between Great Britain and the United States. It followed the American victory at Yorktown in 1781 and months of negotiations involving American, British, French, and Spanish interests.
The treaty recognized the United States as an independent nation and set its western boundary at the Mississippi River. It also granted the United States fishing rights off Newfoundland and dealt with debts, property, and the treatment of Loyalists.
The year 1783 is distinct from 1776, when Congress adopted the Declaration of Independence, and 1787, when the Constitutional Convention drafted the Constitution. The Declaration announced independence; the treaty secured its international recognition.