Complex sentence: After this, the Chaghan Khudahs began to appear much more less in sources, and in the late 8th-century Chaghaniyan fell under the direct control of the Abbasid Caliphate, which had succeeded the Umayyad Caliphate in 750.
Split into simpler sentences: After this, the Chaghan Khudahs begin to appear much more less in sources. In the late 8th-century Chaghaniyan fell under the direct control of the Abbasid Caliphate, which had succeeded the Umayyad Caliphate in 750.