Correct Answer: Kanchipuram

Solution : The Correct Answer is Kanchipuram

The northern region of Tamil Nadu, known as Tondaimandalam, was ruled by the Pallavas, a Tamil kingdom. The Pallavas' main city was Kanchipuram. Upon becoming the Pallavas' capital, Kanchipuram gained in significance. They constructed temples, roads with thoughtful design, forts, and ramparts. At the height of their power, their realms stretched from the northern region of Andhra Pradesh to the southern bank of the River Kaveri.