Trade and commerce in Andhra has a long History. From the earliest times it played an important role as the centre of trade and commerce as evidenced by a large number of inscriptions and archaeological findings. Because of its long coastal line several port towns like Ghantasala, Kothapatnam, Motupalli, Machilipatnam, etc., came up in Andhradesa and the sea-borne trade was continuous and rewarding..The perennial rivers like Krishna and Godavari were navigable and quite helpful for internal trade.