Abbasid Empire Reigned C.E. until the Mongols took over
{"Image DocumentName": "Abbasid Empire Reigned C.E. until the Mongols took over", "Image ImageDescription": "Capital at Baghdad. Built around trade-introduced idea of credit. Steel produced-used for swords. Mohammad al-Rhazi-publishes medical encyclopedia. Noteworthy contributions in math-algebra.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}