Q. Consider the following statements regarding the interaction between the Delhi Sultanate and medieval Assam:

1. Bakhtiyar Khalji attempted an expedition into Kamarupa.
2. The Sultanate permanently annexed the Brahmaputra valley in the 13th century.
3. The failure of early Turkish expeditions strengthened local resistance.

Which of the above statements is/are correct?
Answer: 1 and 3 only
Notes: Muhammad Bakhtiyar Khalji led an expedition toward Kamarupa in the early 13th century but faced severe resistance and a disastrous retreat. The Delhi Sultanate never permanently annexed the Brahmaputra valley. These failures strengthened the political resilience of local powers like Kamata and later the Ahom kingdom. Thus, only statements 1 and 3 are correct.