The Treaty of Versailles was devastating for Germany, especially because it heavily affected its economy. Both the country's leaders, and the people, were very angered at the other countries for imposing such restrictions. That led to a very mass of people that started to hate the other countries because of the conditions they made them live in. This was used by the politicians that had similar feelings, so eventually that frustration and hatred resulted in aggression toward the other countries, leading to the World War II.