Allied Victory and US Power · US History

Which event is generally considered the start of the 'Nuclear Age' and led to the immediate surrender of Japan?

  1. The firebombing of Tokyo
  2. The Soviet Union's invasion of Japanese-occupied Manchuria
  3. The atomic bombings of Hiroshima and Nagasaki
  4. The signing of the Atlantic Charter
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Correct answer: The atomic bombings of Hiroshima and Nagasaki

The deployment of atomic bombs in August 1945 prompted Emperor Hirohito to surrender, ending WWII. This event also established the United States as the world's sole nuclear power at the time.

Difficulty: Medium Question 6 of 20

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