Explanation First pair is not correctly matched: Anga roughly corresponds to present day Bhagalpur and Monghyr districts of eastern Bihar. Located at the confluence of the Ganga and Champa rivers, its capital city of Champa is identified with modern day Champanagara or Champapura village near Bhagalpur. One of the greatest cities of the sixth century BCE, the capital city of Champa was an important commercial centre located on the trade routes of the time. Excavations at Champa have revealed the city being surrounded by defensive fortifications including a moat. Travel accounts often describe merchants as sailing overseas from Champa to Suvarnabhumi (a possible reference to Southeast Asia).
Second pair is not correctly matched: The Vajji ganasangha was in eastern India, north of the Ganga with its capital at Vaishali. It has been identified with the area of Basadh, near Muzaffarpur area in Bihar. The Vrijji confederacy is counted as one among the most prominent mahajanapadas during the age of the Buddha. Magadha under the king Bimbisara also established marriage alliances with the Vrijji ganasangha.
Third pair is not correctly matched: Vatsa or Vamsa was a kingdom known for its fine cotton textiles. Its capital was situated at Kaushambi, near modern Prayagaraj. Kausambi was an important point on the trade routes connecting the Deccan, the Ganga valley and the north-west. Excavations here have revealed imposing defense structures dating to about the 600 BCE. Vatsa was a powerful mahajanapada under the leadership of the famous king Udayana. Around the same time, king Pradyota was ruling Avanti. The rivalry between the two is the subject of many legends. In fact king Udayana featured as the protagonist of at least three Sanskrit dramas from later periods – the Svapna-Vasavadatta of Bhasa and the Ratnavali and Priyadarshika of Harsha.
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