Simple: to reverse the outcome of World War I. The greater part of the German people never accepted that they had been defeated in WWI and felt betrayed by their own politicians and by the Allies. read more
So why did Germany fight WW2 - it was Hitler's idea. Plus the Germans still thought that they were cheated from winning WW 1 by shitty diplomats. read more
Germany and the start of World War 2 in Europe Germany plunged Europe into war early in September 1939. Key German elites at the time had a sense of boundless "entitlement". They thought they were morally, academically and racially superior and therefore "entitled" to all kinds of things. read more
And a few days later, Germany and Italy declared war against the United States. President Franklin Roosevelt quickly decided that America could not fight major campaigns in the Pacific and in Europe at the same time. read more