Which was not an origin of World War II?

a. military aggression by German and Italy

b. preemtive attack on Hungry by the soviet

c. policy of appeasement by Britain and France

d. armed invasion of northern china by Japan

It is B because The fascist leaders in Germany and Italy want a war to test their new strength, appeasement by the British and France gave Hitler time to prepare his wartime strategy, and Invasion of China lead to the Japan joining the war. Actually, for B it is that Germany invaded Poland which technically started WW2