The western gangas ruled in Mysore state AD 250-1004. They encouraged scholarly work, built some remarkable temples, and encouraged cross-peninsular trade. The eastern gangas ruled Kalingas from 1028 to 1435. They were great patrons of religion and the arts. The temples of the ganga period rank among the masterpieces of Hindu architecture. Both dynasties interacted with the Chalukya and Chola dynasties.