What was the boundary between the Delhi Sultan and Mongols during the period of Alauddin Khalji after 1306 A.D.?

Which of the following places was diamond mining carried out during the Delhi Sultanate period?

Who became the Sultan of Delhi after the death of Balban?

Who was the ruler of Devagiri at the time of Alauddin Khalji’s invasion?

Who amongst the following Generals of Alauddin Khalji, ultimately became the first Sultan of Tughluq dynasty?

During the regime of which Sultan was the Khalisa land developed on a large scale?