The Treaty of versailles was trying to create peace between Germany and the Allied powers. Germany was punished so had to give up territory, spend money on paying for the WW1 and not start war.
Failure of Appeasement caused WW2 because it allowed Hitler and the Nazis to build Germany's military power until it was strong enough to fight a major war
Hitler's "rise" can be considered to have ended in March 1933, after the Enabling Act of 1933 in that month. President Hindenburg had already appointed Hitler as Chancellor on 30 January 1933 after a series of parliamentary elections.
Nationalism with World War II was a major motivation behind many individuals who joined the Nazi Party. Adolf Hitler, the leader of the Nazi Party, used his profound oratory skills to manipulate the German people into following his regime's propaganda.
Hitler immediately began secretly building up Germany’s army and weapons. Although Britain and France knew of Hitler’s actions, they thought a stronger Germany would stop the spread of Communism from Russia.
The whole world was hit by an economic depression in the late 1920s. In a depression, economies shrink, trade is re- duced, businesses close, prices fall, banks fail, and unemployment rises.