Missions History Opium trade Protestant churches China -- History -- Opium War, 1840-1842 China -- Politics and government -- 19th century China -- Politics and government -- 20th century Christianity Church history Education Missionaries Opium trade -- China -- History -- 19th century Opium trade -- China -- History -- 20th century Politics and government Presbyterian Church Protestant churches -- Missions -- China -- History -- 19th century Protestant churches -- Missions -- China -- History -- 20th century Women Women missionaries