The Siege of Yorktown was the culminating act of the Yorktown campaign, a series of military operations occupying much of 1781 during the American Revolutionary War. The siege was a decisive Franco-American victory: after the surrender of British Lt. Gen. Charles, Earl Cornwallis on October 17, the government of Lord North fell, and its replacement entered into peace negotiations that resulted in British recognition of American independence with the 1783 Treaty of Paris.