Vajji was a mahajanapada towards the north of Ganga in the division of Tirhut. It was a confederacy of eight or nine clans. The capital of Vajji mahajanapada was situated at Vaishali.
Bhaga, Bhoga, Kara and Hiranya refers to the different types of revenues which were collected by the rulers during the early medieval period. They were the chief sources of revenue to the donees.