Algo así me enseñaron en el colegio. Que bueno reencontrarlo.
This sudden burst of maritime activity was produced by a combination of coincidences and events. To begin with, Europe after 1300 was no longer the narrow, inward-looking world of earlier times. The restoration of trade in the Mediterranean, the growing taste for the spices and luxury goods of Asia, and the written accounts of Polo and his fellow travelers contributed to a growing interest in distant lands. Meanwhile, the collapse of the Mongol Empire in the late fourteenth century, followed by the conquest of Constantinople by the Ottoman Turks in 1453, resulted not just in political instability and insecurity of travel that threatened to cut overland contacts with Asia. It led as well to rising prices and increased costs of trade with Muslim merchants of the Middle East, who dictated the terms of commerce and transacted business only with Italian middlemen from the city-states of Renaissance Venice and Genoa. At the same time, the Muslim victory over Byzantium intensified the old hostility between Christendom and Islam, which rekindled the crusading spirit in the minds of many Europeans. All these conditions provided more incentives to seek new routes to the sources of silk and spices in Asia, where new allies against Islam might be found, as well.
What appeared to be unrelated events also combined at this time to enable voyages of exploration. The recovery of ancient Greek and Latin texts on geography, mathematics, and astronomy—lost since the fall of Rome—provided important new sources of knowledge vital to the science of navigation. Advances in shipbuilding and design similarly helped, such as the development of the caravel in Portugal and Spain. This sturdy, seaworthy vessel, capable of sailing well both before and into the wind and of carrying large cargoes, was better suited for long voyages across dangerous seas out of sight of land for weeks at a time than any other ships of the day. Western Europe thus had the means, the motive, and the opportunity to open new routes to the fabulous east and to discover new continents to the west by the beginning of the fifteenth century.
Maritime exploration in the age of discovery, Ronald Love. pp 4/5.