Which war featured the Allied Powers of the United States, Great Britain and the Soviet Union?

• A. World War II
• B. World War I
• C. The American Civil War
• D. The American Revolution

Answer: (A)

World War II is the one where the United States, Great Britain, and the Soviet Union fought together as Allies. They joined forces to defeat the Axis Powers—Germany, Italy, and Japan—across multiple theaters from Europe to the Pacific. The Soviet Union entered the war in 1941 after being invaded by Germany, the United States entered after the attack on Pearl Harbor, and Britain had been in the fight since 1939. This trio of major powers as formal Allies is specific to World War II; in World War I, the Soviet Union was not a lasting ally with Britain and the United States, and the American Civil War and the American Revolution involved different nations and eras, with no such three-way Allied partnership.