Did hitter cause World War 2?

Adolf Hitler played a significant role in causing World War II through his aggressive expansionist policies and ideologies. His invasion of Poland in September 1939 prompted Britain and France to declare war on Germany, marking the official start of the conflict. Additionally, Hitler's totalitarian regime promoted militarism and nationalism, which contributed to the destabilization of Europe and the rise of fascism. While other factors and nations were involved, Hitler's actions were central to the outbreak of the war.