Tamil Nadu is considered to be very much older than North India. As per the geological time scales North India and the Himalayan ranges appeared on the globe recently. Tamil Nadu is said to exist as part of the continent that linked Africa and Australia together even before that. It was called 'Lemuria' or 'Kumarik Kandam'.
For more visit: https://www.indianetzone.com/26/history_tamil_nadu.htm

Author's Bio: 

History of Tamil Nadu reveals that this ancient place in South India was ruled by various kingdoms like the Pandyas Dynasty, Cholas Dynasty, Nayakas Dynasty and Pallavas Dynasty.