Indian Ocean trade Madagascar at this time leaving behind a lasting cultural and genetic legacy. Chinese fleets under Zheng He criscrossed the Indian Ocean during the early part of the 15th century. The missions were diplomatic rather than commercial, but many exchanges of gift and produces were made. The Portuguese under Vasco da Gama discovered a naval route to the Indian Ocean through the southern tip of Africa in 1497–98. Initially, the Portuguese were mainly active in Calicut, but the northern region of Gujarat was even more important for trade, and an essential intermediary in east-west trade. Venetian interests were directly threatened as
Portuguese discovery of the sea route to India the ships back into the river Tagus, bringing with them the good news that bestowed on Portugal a prestigious maritime position. Spices were always considered the gold of the Indies. Cinnamon, ginger, cloves, pepper and turmeric had long been products which were difficult to obtain in Europe and brought in by caravans and experienced merchants coming from the East. A merchant of Lisbon describes the overland spice route as follows: Only the markets of Venice and Genoa then scattered these spices all over Europe, great in cost, and without guaranteed arrival. In 1453, with the capture of the city of