SOme Theories about Background and origin of Vijaya Nagra Samrajya
Before the early 14th-century rise of the Vijayanagara Empire, the Hindu states of the Deccan – the Yadava Empire of Devagiri, the Kakatiya dynasty of Warangal, and the Pandyan Empire of Madurai – were repeatedly raided and attacked by Muslims from the north.
By 1336 the upper Deccan region (modern-day Maharashtra and Telangana) had been defeated by armies of Sultan Alauddin Khalji and Muhammad bin Tughluq of the Delhi Sultanate.
Further south in the Deccan region, Hoysala commander Singeya Nayaka-III declared independence after the Muslim forces of the Delhi Sultanate defeated and captured the territories of the Yadava Empire in 1294 CE.
He created the Kampili kingdom near Gulbarga and Tungabhadra River in the northeastern parts of present-day Karnataka state. The kingdom collapsed after a defeat by the armies of Delhi Sultanate and upon their defeat, the populace committed a jauhar (ritual mass suicide) in c. 1327-28.
The Vijayanagara Kingdom was founded in 1336 CE as a successor to the hitherto prosperous Hindu kingdoms of the Hoysalas, the Kakatiyas, and the Yadavas with the breakaway the Kampili Kingdom adding a new dimension to the resistance to the Muslim invasion of South India.
Two theories have been proposed regarding the linguistic origins of the Vijayanagara empire. One is that Harihara I and Bukka I, the founders of the empire, were Kannadigas and commanders in the army of the Hoysala Empire stationed in the Tungabhadra region to ward off Muslim invasions from Northern India.
Another theory is that Harihara and Bukkaraya were Telugu people, first associated with the Kakatiya Kingdom, who took control of the northern parts of the Hoysala Empire during its decline.
They were believed to have been captured by the army of Ulugh Khan at Warangal. Historians agree the founders were supported and inspired by Vidyaranya, a saint at the Sringeri monastery, to fight the Muslim invasion of South India.