What were their intellectual origins/main ideologies that they draw on?

Compare and contrast Soviet Socialism, Italian Fascism, and German Nazism. Consider such questions as: What were the main arguments of Stalin, Mussolini, and Hitler in the excerpts of their works? What was the relationship between the state and the individual for each of the ideologies? What were their intellectual origins/main ideologies that they draw on? What was the role of the leader in each of these movements?