They laid the foundation of Vijaya –nagar .Vijayanagar-Bahamani conflict began with the foundation of kingdoms.Clash of interests in three areas:Raichur doab (between Krishna and Tungabhadra).Krishna –Godavari delta and Marathawada.
Bukka I strengthened the city of Vijyanagar.He restored harmony between the warring Vaishnavas and the Jains.The Rais of Malabar,Ceylone and other countries kept ambassadors at his court.
Bukka I was succeeded by his son Harihar II.
Deva Raya I(1406-22):-
He was the third son of Harihar II .His greatest achievement was his irrigation works where a dam was built across the Tungabhadra,with canals leading to the city Nicolo de conti visited Vijyanagar during reign.
Deva Raya II(1423-46):-
He was the grandson of Deva Raya I. Ahmad Shah I of Bahamani invaded Vijyanagar and exacted a war indemnity.Deva Raya II began the practice of employing Muslim cavalrymen and archers in the army on large scale (Their induction had began during Deva Raya I).He was called Praudh Deva Raya.In his inscriptions he has the title Gajabetekara (the elephant hunter).Sri Lanka paid a regular tribute to him.He had learning for Vira Shavism,yet he respected other religions .Dindima was the court poet,whereas Srinatha was given the title of’Kavisarvabhauma’Abdur Razzak,the envoy of Shah Rukh visited Vijyanagar during his reign.