Original: From the 7th to the 9th century , three dynasties contested for control of northern India : the Pratiharas of Malwa , the Palas of Bengal and the Rashtrakutas of Deccan .
Simplified: Some of these dynasties were the Pratiharas of Malwa and later Kannauj ; the Palas of Bengal , and the Rashtrakutas of the Deccan .