Question

what were the main reasons for the conflict between the vijaynagar and the bahamani kingdoms, even though they were neighbours?

Answer 1

The two Kingdoms i.e. the Vijayanagara Kingdom (1336-1565) and the Bahamni Kingdom (1347-1527) (which was divided in due course in five states of Berar, Bijapur, Ahmednagar, Golkunda and Bidar) flourished side by side for about two hundred years.
However, for all these years, they-were engaged continually in conflict. Ultimately in 1565, four Muslim states barring Berar formed a confederacy, fought against Vijaynagara and gave a crushing defeat to it.