Adolf Hitler was the leader of Nazi Germany from 1934 until his suicide in 1945. He initiated fascist policies that led to World War II and the deaths of at least 11 million people, including the mass murder of an estimated 6 million Jews in the Holocaust. Hitler rose to power in Germany during the economic struggles of the Great Depression. As dictator, he suppressed opposition and established a one-party Nazi state. Hitler's military aggression and genocidal policies escalated tensions in Europe, culminating in the invasion of numerous countries and the start of World War II. Defeat loomed for Nazi Germany in 1945, and Hitler committed suicide as Allied forces advanced on Berlin.