Hitler's attacks of smaller countries and military build-ups as a result of economic depression led to Europe's involvement in World War II. True False

The question is asking whether Hitler's attacks of smaller countries and military build-ups as a result of economic depression led to Europe's involvement in World War II. and the answer is "false". Here, the concept of "appeasement" is also relevant - for example when Hitler attacked Czekoslovakia and Austria, the western powers let him get away with it, in the hope that not more conflict is truguered