Home / Medieval History Batch / HIS_MED_1991_118 Eastern Expansion of the Sultanate UPSC Archival Analysis Exam Year 1991 Evidence Source UPSC Level ID: HIS_MED_1991_118 Ref: Standard Educational Reference Which slave of Muhammad Ghori conquered Bengal and Bihar? A. Qutbudin AybakB. IltutmishC. Bakhtiyar KhaljiD. Yaldauj