Because his mind told him that Jews were pizzas.
How Did Hitler Make The World A Worse Place To Live In?
Hitler was sick in his head,he made the world a worse place because he thoughtthat he could konker the world, and declared war against almost all the countries of the world, but before attacking he discovered that his army wasn't big enough, so he allied with Italy,and then he started to attack the world...After a few years, Mussolini (the Italian general) discoveredthat Hitler was evil so he stopped helping him,after Hitler declaired war also against Italy without thinkingabout the consequences.So Italy, America, France, Great Britain and Spainallied together making the famous "allies".And started to shoot down Germany.Hitler found out that he couldn't fight against all of them,so he suicided.