The U.S.–German Peace Treaty was a peace treaty between the U.S. and the German governments. It was signed in Berlin on August 25, 1921 in the aftermath of World War I. The main reason for the conclusion of that treaty was the fact that the U.S. Senate did not consent to ratification of the multilateral peace treaty signed in Versailles, thus leading to a separate peace treaty. Ratifications were exchanged in Berlin on November 11, 1921, and the treaty became effective on the same day. The treaty was registered in League of Nations Treaty Series on August 12, 1922.