Correct Option
The correct option is (c) 1 and 3 only.
Explanation
The Mongol invasions were a persistent external threat to the Delhi Sultanate, particularly during the 13th and 14th centuries. These invasions significantly influenced the foreign policy, military organization, and economic administration of the Sultanate rulers, especially under the Khalji and Tughlaq dynasties.
Statement-wise Analysis
- Statement 1 is Correct: Genghis Khan invaded Transoxiana in north-east Iran in 1219. Soon after, the Mongols attacked the Delhi Sultanate’s frontiers during the reign of Iltutmish (1210–1236), reaching the banks of the Indus in pursuit of the Khwarazm prince, Jalaluddin Mangbarani.
- Statement 2 is Incorrect: The Delhi Sultanate was not unaffected by the Mongol invasions. On the contrary, the threat increased significantly over time. During the reign of Alauddin Khalji, Delhi was attacked twice (in 1299/1300 and 1302–1303). The Mongols ravaged the frontier territories and even besieged the city, forcing the Sultans to take defensive measures.
- Statement 3 is Correct: To counter the persistent Mongol threat, the Delhi Sultans were compelled to mobilize and maintain a large standing army. For instance, Alauddin Khalji raised a massive standing army, constructed the garrison town of Siri, and implemented market control reforms to ensure soldiers could live on fixed salaries. Muhammad Tughlaq also raised a large army to deal with the Mongol sphere of influence.
Key Takeaway: The Mongol threat was a primary driver for the militarization of the Delhi Sultanate, leading to the establishment of a large central standing army and significant administrative reforms under rulers like Alauddin Khalji.