The Treaty of Versailles was the most important of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers. The main terms of the Versailles Treaty were: (1) the surrender of all German colonies as League of Nations mandates; (2) the return of Alsace-Lorraine to France; (3) cession of Eupen-Malmedy to Belgium, Memel to Lithuania, the Hultschin district to Czechoslovakia, (4) Poznania, parts of East Prussia and Upper Silesia.