Question

plz suggest a book if cant answer

Answer 1

for sultanate do consult - *satish chandra's "Delhi sulatanate"

for ziauddin barani's part consult- * Mahibul hasan's "some historians of medieval India"..or" Cambridge economic history of medieval india"

For the ancient part u can consult upendra singh or A.L basham...
For the effective answers u don't have to depend upon only one book.
HOPE THAT HELPS!