The History of Karnataka goes back several millennia. Several great empires and dynasties have ruled over Karnataka and have contributed greatly to the history, culture and development of Karnataka as well as the entire Indian subcontinent. The Chindaka Nagas of central India Gangas, Rashtrakutas of Manyakheta, Chalukyas of Vengi, Yadava Dynasty of Devagiri were all of Kannada origin who later took to encouraging local languages.