Adolf Hitler was a German political leader who served as the Chancellor of Germany from 1933 to 1945 and the Führer (leader) of Nazi Germany. He was the head of the Nazi Party, and under his leadership, Germany became a totalitarian state. Hitler's political ideology was centered on extreme nationalism, racism, and anti-Semitism. He aimed to establish a totalitarian regime based on the idea of Aryan racial superiority and sought to expand German territory, leading to the outbreak of World War II. Hitler's policies resulted in the deaths of millions, including the genocide of six million Jews during the Holocaust.