China was forced to legalize opium and lost control over much of its economy as a result of C). the Opium Wars.
The Opium Wars were two wars which took place between the Qing dynasty and Western powers in the mid-19th century.
Between 1839 and 1842, British forces fought a war in China which directly benefitted drug smugglers.
Basically, the first Opium War was fought between China and Great Britain.
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