Kamsa's father-in-law, and king of Magadha attacked Yadavas to avenge the killing of Kansa. Yadavas had to shift their capital from Mathura (central Aryavart) to Dwaraka (on the western coast of Aryavart) on the The Sindhu(Ocean in Sanskrit) . Ancient Yadava Kingdoms Surasena Kingdom Native kingdom of Vasudeva Krishna Dwaraka Kingdom