Explanation:

Ajatashatru was a king of the Haryanka dynasty of Magadha in East India. He was the son of King Bimbisara and was a contemporary of both Mahavira and Gautama Buddha. He forcefully took over the kingdom of Magadha from his father and imprisoned him. He fought a war against Vajji, ruled by the Lichchhavis, and conquered the republic of Vesali. The city of Pataliputra was formed by fortification of a village by Ajatashatru.

Ajatashatru moved his capital from Rajgriha to Champa due to death of his father.