Korean War · US History

Why did China enter the Korean War in late 1950?

  1. South Korea launched a full-scale ground invasion of Beijing itself
  2. The United States carried out a bombing raid on the city of Shanghai
  3. Japan formally declared war on China for a second time
  4. UN forces advanced close to the Chinese border near the Yalu River
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Correct answer: UN forces advanced close to the Chinese border near the Yalu River

China entered the war after UN forces pushed far north toward the Yalu River, near China's border. Chinese leaders feared a hostile force close to their territory and intervened on North Korea's side.

Difficulty: Medium Question 9 of 20

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