Q. For the first time, consolidation of the Delhi Sultanate occurred during the reign of?
Answer: Balban
Notes: In the early thirteenth century the control of the Delhi Sultans rarely went beyond heavily fortified towns occupied by garrisons. The Sultans seldom controlled the hinterland of the cities and were therefore dependent upon trade, tribute or plunder for supplies. Delhi’s authority was also challenged by Mongol invasions from Afghanistan and by governors who rebelled at any sign of the Sultan's weakness. The Sultanate barely survived these challenges. Its consolidation occurred during the reign of Ghiyasuddin Balban and further expansion under Alauddin Khalji and Muhammad Tughluq.