Abdul Sheriff analyses the early stages of the underdevelopment of East Africa.The rise of Zanzibar was based on two major economic transformations: firstly, slaves became used for the production of cloves and grain for export, instead of the slaves themselves being exported; secondly there was an increaseddemand for luxuries such as ivory and Zanzibar took advantage of its strategic position to trade as far as the Great Lakes. Yet this economic success increasingly subordinated Zanzibar to Britain, with its anti-slavery crusade andits control over the Indian merchant class.North America: Ohio U Press; Kenya: EAEP