sentences:  Chalmers blamed the tax, but Chamberlain disagreed, saying African slave traders instigated the revolt.Chamberlain used the revolt to promote his aggressive "constructive imperialism" in West Africa.On 29 March 1898, Hermann von Eckardstein, who had described Chamberlain as "unquestionably the most energetic and enterprising personality of the Salisbury ministry", arranged a meeting between the Colonial Secretary and the German Ambassador in London, Paul von Hatzfeldt.