… and the 19th Century World Economy Gwyn Campbell, McGill University, “Servitude and the Changing Face of Demand for … in the Indian Ocean World, c.1800-1900” Janet Ewald, Duke University, “ ‘No Objection to a Wandering Unsettled Life’: … Clarence-Smith, School of Oriental and African Studies, University of London, “Islam and the Abolition of Slavery in …