The Convention of 1800 or Treaty of Mortefontaine resulted in a peaceful end of the alliance between the United States and France. The Quasi-War officially ended with this treaty, which formally ended the alliance of 1778 between the United States and France. The Treaty of Mortefontaine terminated the only formal treaty of alliance the young nation had signed. It would be nearly a century and a half before the United States entered into another formal alliance.
The Convention between the French Republic and the United States of America at Mortefontaine on October 3, 1800, is depicted here by Francesco Piranesi (1758-1810). This image shows the celebration that was held after the treaty was signed in the Gardens of the castle of Mortefontaine, which was owned by Joseph Bonaparte.