Which leader is associated with Germany's entry into World War II?

The association of Adolf Hitler with Germany's entry into World War II is well-founded in historical context. As the leader of the National Socialist German Workers' Party (Nazi Party), Hitler rose to power in the early 1930s and fundamentally altered Germany's political landscape. His aggressive expansionist ideology and militaristic policies led directly to the invasion of Poland on September 1, 1939, which marked the beginning of World War II. Hitler's decision to violate international agreements, such as the Treaty of Versailles, and his belief in the superiority of the Aryan race drove Germany to seek to dominate Europe militarily. His leadership was characterized not only by the consolidation of power through totalitarian means but also by the use of propaganda to garner public support for military actions, which ultimately led to widespread conflict across multiple continents.