What new name was given to Devagiri?

Name the Delhi Sultan who first of all invaded the Deccan.

Read the following excerpt and answer the question that follows:

"Malik Kafur was one among them who later became the trusted commander of the Khalji forces and led the invasions to South India"

(Source: https://www.nios.ac.in/media/documents/SrSec315NEW/315HistoryEng/315HistoryEng_Lesson9.pdf)

Name three kingdoms defeated by Malik Kafur in the south.

In which region did Muhammad-bin-Tughlaq raise taxes, and why was it a mistake?