What types of leaders came to power in italy, germany, and the soviet union before world war ii?

Totalitarian/fascist leaders came to power in these countries before the World War II which lasted from Sep 1, 1939 – Sep 2, 1945. The specific leaders of this group were known as Adolf Hitler, Benito Mussolini, and Joseph Stalin. Leaders like Hitler were one of the main causes of the war as well. 

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               - Dotz