Peace treaty after World War I between the Allies and Germany, signed 28 June 1919. It established the League of Nations. Germany surrendered Alsace-Lorraine to France, and large areas in the east to Poland, and made smaller cessions to Czechoslovakia, Lithuania, Belgium, and Denmark. The Rhineland was demilitarized, German rearmament was restricted, and Germany agreed to pay reparations for war damage. The treaty was never ratified by the USA, which made a separate peace with Germany and Austria 1921.