united+nation

After the League of Nation failed to prevent World War 2 (1939–1945) and realizing that Mankind cannot afford a Third World War the United Nations was established to replace the flawed League of Nations in 1945 in order to maintain international peace and promote cooperation in solving international economic, social and humanitarian problems. The earliest concrete plan for a new world organization was begun under the aegis of the U.S. State Department in 1939.