Q. The first Sultan who requested and obtained letters of investiture from the Caliph (Khalifa) was _____: Answer:
Iltutmish
Notes: The Mongol policy of Iltutmish saved India from the wrath of Ghengis Khan. He was the first Sultan who requested and obtained letters of investiture from Abbasid Caliphate in 1229 A.D. The sanction recognized him as the lieutenant of the faithful.