In 1488, Portuguese explorers sailed around the tip of Africa. They were hoping to find a new sea route to India, where they were planning to trade for spices, etc. Instead, the explorers landed on East City- States of Sofala, Kilwa, and Mombasa, which the Portuguese took over and colonized. Portugal ruled these city- states for another century. This event is important because it influenced the history of all involved: Portugal, but especially Sofala, Kilwa, and Mombasa. (Beck 379).