The Opium Wars were a series of wars between Chine and Great Britain. It started when Chine started to refuse the shipments of Opium. The war was a fail for China, this means that answer A, C, and D are wrong. The only answer left is B. Please contact me if you want more information on the opium war.
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convergent boundary by Elena
Answer:
Missouri Compromise, measure worked out in 1820 between the North and the South and passed by the U.S. Congress that allowed for admission of Missouri as the 24th state. It marked the beginning of the prolonged sectional conflict over the extension of slavery that led to the American Civil War.
Explanation: