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Battle of ten Kingdoms
Mandala- 7 (7.18 etc.) mentions the Bharatas as taking part in the Battle of the Ten Kings, where they are on the winning side. Due to the victory of the Bharata chieftain Sudas in this battle, the Bharata rulers were able to settle in the Kurukshetra area. They appear to have been successful in the early power-struggles between the various Vedic tribes. This battle of 10 Kings not only fought for the removal of Vishwamitra but also for sharing the river water and Aryan ideologies.

Vashistha was for the liberalism of Aryan religion while Vishwamitra was against the removal of the caste system and mixing with natives.