“…In the introduction to his great history of North Africa and Asia, the famous Muqaddima, Ibn Khaldūn devotes substantial attention to how the organization of dynasties, their elites and the agrarian-based societies that they dominate, transform over time. 17 A pattern emerges for Ibn Khaldūn first and foremost in the chronological oscillation between simple tributary polities of local chiefs, families, and clans of nomadic origins on the one hand, and complex tax-based and urban-centered agrarian states and empires on the other hand, perpetuated by "clients and followers" (mawālī), by professional, meritocratic groups of administrators and military. 18 For Ibn Khaldūn, society's natural movement towards more specialized, structural, and autonomous relationships of power and authority was a negative development.…”