Soviet Union - Communism - Stalin.
A struggle for leadership followed Lenin's death in early 1924; Joseph V. Stalin and Leon Trotsky were the two main protagonist, with Stalin emerging victorious by the late 1920s. Stalin's program called for a more gradual transformation of Soviet society than did Trotsky's and had as its primary objective the consolidation of communism in the USSR rather than Trotsky's ideal of immediate world revolution. Later Stalin adopted more radical measures. Nevertheless, the Soviet Union continued to guide the Communist parties abroad through the Third International, or Comintern.
Germany - Nazi Party - Hitler.
Nazi Germany, also known as the Third Reich, is the common name for Germany when it was a totalitarian state ruled by Adolf Hitler and his National Socialist German Wokers' Party. On 30 January 1933 Hitler became Chancellor of Germany, quickly eliminating all opposition to rule as sole leader. The state idolized Hitler as its Fuhrer ("leader"), centralizing all power in his hands.
Italy - Fascism - Mussolini.
Benito Amilcare Andrea Mussolini was an Italian politician who led the National Fascist Party, ruling the country from 1922 to his ousting in 1943. Mussolini has been credited with being one of the key figures in the creation of fascism. Mussolini was Dictator of Italy from 1930 to 1943, having destroyed all political opposition through his secret police and having outlawed workers to go on strike.
Japan - Fascism - Tojo.
Hideki Tojo was a general of the Imperial Japanese Army, the leader of the Taisei Yokusankai, and the 40th Prime Minister of Japan during most of World War II, from 17 October 1941 to 22 July 1944. As Prime Minister, he was directly responsible for the attack on Pearl Harbor, which led to the war between Japan and United States, although planning for it had begun before he entered office. After the end of the war, Tojo was arrested, sentenced to death for Japanese war crimes by the International Military Tribunal for the Far East, and was hanged on 23 December 1948.