The League of Nations although had enjoyed limited success, was a failure because of the selfishness displayed by the European powers. The Treaty of Versailles lacked practicality and ultimately failed at 'addressing the causes of conflict and restoring peace and normality', because there was a World War II.
What did the Treaty of Versailles accomplish?
German territorial losses, Treaty of Versailles, 1919. Germany lost World War I. In the 1919 Treaty of Versailles, the victorious powers (the United States, Great Britain, France, and other allied states) imposed punitive territorial, military, and economic provisions on defeated Germany.