9.One reason for the outbreak of World War II was the *
(1) ineffectiveness of the League of Nations
(2) growing tension between the United States and the Soviet Union
O (3) conflict between the Hapsburg and the Romanov families
0 (4) refusal of the German government to sign the Treaty of Versaille
The League of Nations did many things to aggravate Germany leading up to World War II, and did little to keep the country from collapse after World War I.
