Nazism as a doctrine was proposed by Adolf Hitler. Nazism is a form of fascism that developed in Germany during the 1920s and 1930s, and it was based on the principles and ideas of Hitler and his Nazi Party. Hitler's ideas were rooted in extreme nationalism, racial purity, anti-Semitism, and the need for authoritarian rule. He believed in the superiority of the Aryan race and the need for Germany to expand its territory and resources. Hitler's ideology was also characterized by the use of propaganda, terror, and violence to suppress opposition and dissent. Hitler's rise to power and implementation of his Nazi doctrine led to World War II, the Holocaust, and the deaths of millions of people.