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.
The Nanda dynasty ruled in northern part of the Indian subcontinent during the 4th century BCE, and possibly during the 5th century BCE. In 326 BC, Alexander invaded India, after crossing the river Indus he advanced towards Taxila.