How to find out about trade and tr ade and trade and traders The Northern Black Polished Ware pottery, especially bowls and plates, were found from several archaeological  sites throughout the subcontinent. Traders may have carried them from the places where they were made, to sell them at other places. South India was famous for gold, spices, especially pepper, and precious stones. Pepper  was particularly valued in the Roman Empire, so much so that it was known as black gold. Traders carried many of these goods to Rome in ships, across the sea, and by land in caravans. There must have been quite a lot of trade as many Roman gold coins have been found in south India. Kingdoms, Kings…