Why was Mein Kampf important?

Mein Kampf is an important work or document in history because it clearly outlines the roots of Adolf Hitler's ideology prior to his rise to power in Germany. Written while he was in prison, Hitler chronicled his life and also his future political plans for Germany which were based on racist, oppressive, and fascist principles. The book shows the roots of Nazism and the ideas of Hitler that later led to the Holocaust and World War II.