Many countries and leaders were involved in World War II. The main Allied powers were the United States, United Kingdom, Soviet Union, and China, led by leaders such as Franklin D. Roosevelt, Winston Churchill, Joseph Stalin, and Chiang Kai-shek. The main Axis powers were Germany, Japan, and Italy, led by leaders such as Adolf Hitler, Emperor Hirohito, and Benito Mussolini. Additionally, many other countries were involved in the war, either as part of the Allied or Axis forces or as neutral nations.
