Mention two reasons for having control on the northern frontiers of Vijayanagara, by the Sultans of Deccpinajid the Gajpati rulers of Orissa.
The two reasons for having control on the northern frontiers of Vijayanagara by the Sultans of Deccan and the Gajpati rulers of Orissa were:
(i) for control of the fertile river valleys.
(ii) the resources generated by lucrative overseas trade.