Wilson agreed to allowing the Allied European powers and Japan to essentially expand their empires by establishing de facto colonies in the Middle East, Africa, and Asia out the former German and Ottoman Empires; these territorial awards to the victorious countries were thinly disguised as "League of Nations mandates". The Japanese acquisition of German interests in the Shandong Peninsula of China proved especially unpopular, as it undercut Wilson's promise of self-government. Wilson's hopes for achieving self-determination saw some success when the conference recognized multiple new and independent states created in Eastern Europe, including Albania, Czechoslovakia, Poland, and Yugoslavia.[232][233][234]
The conference finished negotiations in May 1919, at which point the new leaders of republican Germany viewed the treaty for the first time. Some German leaders favored repudiating the peace due to the harshness of the terms, though ultimately Germany signed the treaty on June 28, 1919.[235] Wilson was unable to convince the other Allied powers, France in particular, to temper the harshness of the settlement being leveled at the defeated Central Powers, especially Germany.[citation needed] For his efforts towards creating a lasting world peace, Wilson was awarded the 1919 Nobel Peace Prize.