1. The Treaty of Versailles and the German desire for revenge
2. Economic downturns
3. Nazi ideology and Lebensraum
4. The rise of extremism and the forging of alliances
5. The failure of appeasement
EXPLAINATION :-
The major causes of World War II were numerous. They include the impact of the Treaty of Versailles following WWI, the worldwide economic depression, failure of appeasement, the rise of militarism in Germany and Japan, and the failure of the League of Nations. ... Then, on September 1, 1939, German troops invaded Poland.
