1931- Japan invades Manchuria. 1935- Italy invades Ethiopia. 1936- Germany militarizes the Rhineland. 1938- Hitler agrees to stop expansion at the Munich Conference. Based on this chart, it is evident that a major cause of World War II was A) the failed economic policies during the Great Depression. B) the warlike attitude of countries in the Pacific Ocean region. C) the failure of the League of Nations to stop the aggressive behaviors of some countries. D) the reluctance of European countries to look outside of their borders after World War I.