Final answer:
The eight-nation alliance responded to the Boxer Rebellion by brutally quelling the uprising in China.
Explanation:
The eight-nation alliance responded to the Boxer Rebellion by brutally quelling the rebellion. The Boxer Rebellion was an anti-colonial uprising in China aiming to eliminate foreign influences. The alliance, consisting of European nations, the U.S., and Japan, sent troops to suppress the rebellion and imposed a heavy indemnity on the Qing government.
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