What was the cause of ww1 and ww2?
Widespread imperialism that was fueled by nationalism started WW1. After WW1 ended and Germany lay in ruin, wealthy outsiders, mostly Jews, came in and took things over. Germany realized what was happening in their country (and throughout the western world), and decided to defend their country from invaders. They went too far, however, in attempting to build an empire solely for the purpose of vengeance.