Question

This British export to China caused a war to break out in 1839. a. tea c. silver b. cotton d. opium

Answer 1

D.  Opium
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Answer 2

~Hello there! ^_^

Your question: This British export to China caused a war to break out in 1839.

Your answer: Opium was the British export to China that caused a war to break out in 1839.

The answer is option D.

Hope this helps~