Complex sentence: It was once a flourishing ancient port city known as Kaveri puhum pattinam, which for a while served as the capital of the early Chola kings in Tamilakkam.It is located near the end point of the Kaveri river, aside the sea coast.
Split into simpler sentences: It was once a flourishing ancient port city known as Kaveri puhum pattinam, which for a while served as the capital of the early Chola kings in Tamilakkam. Puhar is located near the end point of the Kaveri river, aside the sea coast.