sentences:  For over six centuries the upper Mahanadi basin remained under the control of the Haihaiyavansi rajas claiming descent from the Ratnapura Kalachuris.The kingdom was located east of the main routes between northern and southern India, and was spared the Muslim invasions of the 13th-16th centuries.In the late fourteenth century a dynastic split divided the kingdom between a northern, older branch at Ratanpur and the younger branch at Raipur to the south.