Answer: Ravi River
Notes: The Battle of Ten Kings, also known as the Dasarajna war, was a significant historical event mentioned in the Rigveda, primarily fought on the banks of the Parushni River (modern Ravi River) between King Sudas of the Bharata tribe and a confederation of ten kings. This battle resulted in a decisive victory for Sudas and the Bharatas, establishing their supremacy and laying the foundation for later Vedic dominance in the upper Gangetic basin.
