What was the opium war? How did it end?

The Opium Wars were two wars in the mid-19th century involving Great Qing and the British Government and concerned their imposition of trade of opium upon China.

The resulting concession of Hong Kong compromised China's territorial sovereignty.

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russia and the united states we're at a verbal war that was nuclear russia wanted more power and to take over more countries

chlorofluorocarbons are released via: aerosol sprays and refrigerants.