Nanda Empire
The Nanda Empire was a vast empire that governed in Magadha and Gangetic plains with an enormous geographical reach in 4th-century BCE northeastern India, with some accounts suggesting existence as far back as the 5th century BCE. The Nandas built on the successes of their Haryanka and Shaishunaga predecessors and installed a more centralised administration. Ancient sources credit them with amassing great wealth, which was probably the result of the introduction of a new currency and taxation system.