In the second half of the 17th century A.D. during the reign of the Palas the Kaivarta revolt took place. The Kaivartas were probably boatmen or fishermen. In that period the Kaivartas had influence in North Bengal. The account of the revolt can be thfound in the Ramcharita of Sandhyakar Nandi. Three leaders of that revolt were Divya (Divvok), Rudok and Bhim. Divya was an official of the Pala empire during the reign of Mahipala II 380 (c. 1070-71). Taking advantage of the weakness of the Pala ele kings, he revolted. Mahipala was killed while suppressing the A revolt. Divya captured Varendra and became its ruler.Not much is known about the magnitude of the revolt or the number of people supporting the revolt. Ramapala, the younger brother of Mahipala tried to defeat Divya and recover Varendra but he failed. The Kaivarta king Bhima was also a popular ruler. At this time the authority of the Palas was limited to North Bihar and North- West of Bengal. Ramapala later defeated and killed Bhima with the help various chieftains (Samanta) of Bengal and Bihar. After that he established Pala rule in Varendra, Kamarupa of Bengal and part of Odisha. He set up his capital in Ramavati city in Varendra region. This revolt had exposed the weakness of central authority in the later part of Pala rule. Information on the Kaivarta revolt is to be found in the poetical work of Ramacharitamanasa.