Question

why did large parts of the subcontinent remain outside the control of the Delhi Sultan? Give reason ​

Answer 1

1. first of all , communication system in those days was not easy as it is today.

2. constant attacks from rajputs and Marathas especially guerilla tactics of warfare made it impossible for mughal to keep far territory under control.

Answer 2

Delhi sultan

Large part of the subcontinent remained outside the control of the Delhi Sultans since it was difficult to control distant provinces of Bengal from Delhi and soon after annexing the southern part of India, the entire region became independent. The forested areas of Gangetic plains were untouched by them. These areas were ruled by the local chieftains. Even if the rulers like Alauddin Khalji and Muhammad Tughluq exerted control over these areas, it was for a short duration

hope it's help you