Explanation:

 Rajgir. The region of modern-day southwestern Bihar called Magadha remained the centre of power, learning, and culture in India for 1000 years. The Haryanka dynasty, founded in 684 BC, ruled Magadha from the city of Rajgriha (modern Rajgir). The two well-known kings from this dynasty were Bimbisara and his son Ajatashatru, who imprisoned his father to ascend the throne. Ajatashatru founded the city of Pataliputra which later became the capital of Magadha.