**Axis and Allies** were the two opposing sides in **World War II** (1939–1945).
### The Axis Powers (the "bad guys"/aggressors)
- **Main countries**: Germany, Italy, and Japan.
- **Leaders**:
- Germany: Adolf Hitler (Nazi leader)
- Italy: Benito Mussolini (Fascist dictator)
- Japan: Emperor Hirohito and military leaders like Hideki Tojo
- They wanted to expand their empires, conquer territory, and dominate other countries. They formed an alliance to help each other.
### The Allies (the side fighting against the Axis)
- **Main countries**: United Kingdom (Britain), United States, Soviet Union (Russia), and China.
- **Key leaders**:
- Britain: Winston Churchill
- United States: Franklin D. Roosevelt (later Harry Truman)
- Soviet Union: Joseph Stalin
- They fought to stop the Axis from taking over the world and to defend their own countries.
### Super Simple Summary
- **Axis** = Germany + Italy + Japan → trying to conquer Europe and Asia.
- **Allies** = Britain + USA + USSR + others → teamed up to defeat them.
The Allies eventually won in 1945.