The Vadgoan and Madhavpur suburbs of Belgaum were important urban centres between 400 BC and 300 AD. The present city was built in the 12th century AD by the Ratta dynasty who were based at nearby Saundatti. The fort of Belgaum was built in 1204 by a Ratta officer named Bichiraja. Belgaum served as the capital of that dynasty between 1210 and 1250, before the Rattas were defeated by the Yadava Dynasty of Devagiri. Belgaum then briefly came under the sway of the Yadavas of Devagiri. The Khiljis of Delhi invaded the region at the turn of the 1300s and succeeded in ruining both the indigenous powers of the region, the Yadava and the Hoysalas without providing a viable administration. This lacuna was supplied by the Vijayanagara Empire, which had become the established power of the area by 1336. A century later, the town had become a bustling trading hub for diamonds and wood, owing to its favourable geographic location in the kingdom.