Opening ParagraphThe main purpose of this paper is to show how recent research into the process of urbanization in Africa and into the structure of African cities and nations compels us to rethink our theories of urbanization in general.The relationship between theory and research is a reciprocal one. New research compels the creation of new models, and new models suggest new subjects and methods of research. But both theory and research are affected by politics in the broadest sense of the term. Many African scholars consider the study of modern Africa by Westerners an extension of economic and political colonialism, especially when African cities are studied in terms of Western models. And many African governments, aware of the social problems involved in urbanization, seriously study the work of both African and non-African social scientists. The period since 1960 has been one of rapid development in the study of urbanization in Africa and the rest of the world, and the African material should throw new light on general theories of urbanization.