Vasco da Gama succeeds in finding the sea route south of Africa to India and returns safely to Portugal. On the east coast of Africa, he sets sail for rich trading cities that have never been heard of in Europe. In the African and Indian cities, it is difficult for the Portuguese to exchange for the desired goods. They have nothing of value to give in exchange. Nevertheless, the journey pays off well, and the next time the Portuguese come to these rich cities, it is with ships loaded with cannons, rifles and soldiers, and by force they now impose dominance over all trade in the Indian Ocean. In South America, the Portuguese and the Spanish conquer, among others, the Inca Empire, the Mayan Empire and the Aztec Empire. Everywhere they plunder and subjugate the indigenous population and take their wealth to Europe.