The causes of World war to began with the treaty of Versailles. The treaty of Versailles was written after world war 1. The treaty was discussed in order to find how Germany would pay for the damages it had caused in world war 1. Germany was not okay with what was on the treaty but they had no choice but to sign in favor of it. German's Hitler began to secretly rebuild an army and weapons for Germany, against what was written on the treaty of Versailles. Hitler wanted to regain the land that Germany had lost in world war two. He made alliances and began to invade.Britain and France were not ready for another war but they would act against Germany if he began to try to invade Poland. There was a failure in appeasement and Hitler was not a man of his word.