Matsya was one of the sixteen Mahajanapadas mentioned in the Buddhist text Anguttara Nikaya. The founder of the kingdom of the Matsya was Virata. It consisted of the present-day Alwar, Jaipur and Bharatpur.
During the reign of Dhruva (c. 780 – 793 CE), the Rashtrakuta kingdom expanded into an empire that encompassed all of the territory between the Kaveri River and Central India. He led successful expeditions to Kannauj and defeated the King Nagabhatta II. He also defeated the Palas of Bengal (Dharmapala).
Fa-hein, the first Chinese Buddhist traveller and monk, came to India during the reign of Gupta emperor Chandragupta II and wrote the book “Si- Yu-Ki” that gives the detail account of the political and social condition of that time.