http://afe.easia.columbia.edu/special/china_1750_opium.htm http://afe.easia.columbia.edu/special/china_1750_opium.htm http://afe.easia.columbia.edu/special/china_1750_opium.htm Untangling the complicated history and politics of Hong Kong The Opium War and Foreign Encroachment Opium Wars I & II http://afe.easia.columbia.edu/special/china_1750_opium.htm Background: The Opium War and Foreign Encroachment Opium Wars Opium wars in China