Causes for WW2: Treaty of Versailles, Hitlers foreign policy (Hitler wanted to unite all German speaking people, and use the east of Germany for living space), weakness of the League of Nations (American didn’t join, and all decisions had to be unanimous), the allies policy os appeasement (Britain and France believed if they gave in to Hitlers demands it would prevent a future war—it led to him invading Austria and Sudenland), Nazi invasion of Poland (Britain and France declared war on Germany afterward)