The world was in a depression, every country was struggling. But Germany was struggling the most. Being blamed for World War 1 they had to pay money to other countries leaving them in financial ruins . The Axis powers rise against the allies, this is the start of World War 2!
Adolf Hitler sall potential in becoming a dictator because Germany was not doing so great, and he thought he could pull them out of this depression by attacking other countries! He took over Austria, Czechoslovakia, Poland, Norway, Netherlands, Luxembourg, and Britain and France!