Krvan Salih, K. and Mustafa Salim, L. 2024. Reasons for prosperity and austerity in the Ayyubid state in Syria and Egypt (570 – 648 AD / 1174 – 1250 AD). Academic Journal of Nawroz University. 13, 1 (Mar. 2024), 990–1005. DOI:https://doi.org/10.25007/ajnu.v13n1a1869.