The Impact of Economic and Social Factors on the Collapse of the Abbasid Caliphate Army 512 - 656 A H - 1118 - 1258 AD. ISJ [Internet]. 2026 Mar. 1 [cited 2026 Jul. 24];17(3):207-2. Available from: https://jis.tu.edu.iq/index.php/jis/article/view/1764