Review the events that led directly to world war 1. then compare and contrast them with the events that led directly to world war 2

The primary events which led to the outbreak of World War II in Europe were German aggressive expansionary policies in Eastern Europe, primarily the invasion of Poland, which triggered the outbreak. A secondary cause was the reluctance of other European powers to stop German aggression before it erupted into a full blown war.

German Chancellor Adolf Hitler frequently railed against the perceived unfairness of the Treaty of Versailles of 1919, and withdrew Germany from the