Kuru Dynasty in Mahabharata
In Mahabharata period, the kuru kingdom was the most prominent ruling kingdom. The rulers of Kuru Dynasty had defeated several Kings and all of them paid tributes to Hastinapur.
Bhishma, Dhritrashtra, Pandu, Duryodhan, Karna, Arjun, Yudhisthira and Bheema were prominent members of Kuru Dynasty.
There were several other kingdom and all of them constituted the Bharatvarsha.
Map of Bharatvarsha
Here is the map which shows all kingdoms of Mahabharata period.