Explanation:

A set of Ashokan rock edicts were found at Sopara suggests that it was an important port in Maurya times; however, it has not been properly explored.
Puhar was once a flourishing ancient port city known as Kaveri Poompattinam, which for a while served as the capital of the Early Chola kings in Tamilakam. Puhar is located near the mouth of the Kaveri river, on the sea coast.
The premier Chola port was Puhar (also known as Kaveripumpattinam), the major Pandya port was Korkai, while Tondi and Muchiri were the important ports in the Chera kingdom.
Betel leaf and areca nut were among the important commodities involved in the trade networks of western India. An 1145 CE inscription from Mangrol, a port on the Saurashtra coast, refers to a levy imposed on the camel loads, cartloads, and bundles of betel leaf arriving at this port, probably from South India.