(i) There were constant conflicts between the Vijayanagara and the Bahamani kingdoms over the control of Raichur doob which was the land between rivers Krishna and Tungabhadra. This area was fertile and rich in mineral resources.

(ii) The famous diamond mines of Golconda were located in the eastern part of the doab region. The geography of both the kingdoms was such that expansion was possible only across the Deccan. It appears that the battles between the two were not conclusive and the status quo was maintained. Sometimes, Bahamani had an advantage and sometimes, Vijayanagara had an advantage. For instance, in 1504, the Bahamani managed to reconquer the Raichur doab. However, with the ascent of Krishna Deva Raya, the Bahamanis lost Raichur, Mudkal, Nalgonda and other inland towns.

(iii) An important result of these wars was that both the powers were so involved amongst themselves that they never realised the increasing power of the Portuguese on the coast of South India. Besides, continuous warfare exhausted the resources of both the states and weakened them.

(iv) The other areas of conflict were the Marathwada region and the deltaic region of Krishna-Godavari. Both regions had fertile areas and important ports that controlled trade to the foreign countries. For instance, the fertile area in the Marathwada region was the Konkan belt that also had the port of Goa which was an important region for trade and export and import especially import of horses from Iraq and Iran.

(v) Despite hostilities between the two states, there were times when they also co-operated with each other. Krishna Deva Raya, for example, supported some claimants to power in the Sultanates and took pride in the title 'establishment of the Yavana kingdom'. Similarly, the Sultan of Bijapur intervened to resolve succession disputes in Vijayanagra following the death of Krishna Deva Raya. There were also sharing and exchange of ideas, especially in the field of art, literature and architecture.