Slavery and society in the central Sudan -- Slavery in the Sokoto Caliphate -- Jihad and slavery: the origins of enslaved Muslims in Bahia -- Competing markets for male and female slaves in the interior of west Africa, 1780-1850 -- Concubinage in an Islamic society -- Plantations in the Sokoto Caliphate -- Murgu: the wages of slavery -- Resistance to slavery and problems of slave control -- Colonial conquest and the fugitive slave crisis -- Slavery questions in early colonial northern Nigeria -- Revolutionary Mahdism and resistance to colonial rule in the Sokoto Caliphate, 1894-1906 -- Concubinage and the status of women slaves in early colonial northern Nigeria