Key points are not available for this paper at this time.
I.M. Lewis Introduction 2. Peter Morton Williams The Fulani Penetration into Nupe and Yoruba in the Nineteenth Century 3. P.C. Lloyd Conflict Theory and Yoruba Kingdoms 4. Structural Differentiation in Rome (200-31 B.C.): The Genesis of an Historical Bureaucratic Society 5. Edwin Ardener Documentary and Linguistic Evidence for the Rise of the Trading Polities between Rio del Rey and Cameroons 6. Martin Southwold The History of a History: Royal Succession in Buganda 7. E.R. Cregeen The Changing Role of the House of Argyll in the Scottish Highlands 8. R.E. Bradbury Continuities and Discontinuities in Pre-colonial and Colonial Benin Politics (1897-1951) 9. Ian Whitaker Tribal Structure and National Politics in Albania, 1910-1950
Cunnison et al. (Sun,) studied this question.