The Portuguese Age of Discovery was a period during the 15th and 16th centuries when Portugal explored new territories and sea routes. Driven by the desire for trade, wealth, and spreading Christianity, Portuguese explorers like Prince Henry the Navigator played a crucial role in advancing maritime technology and navigation. Key voyages included Vasco da Gama's journey to India, which opened up lucrative spice trade routes, and Ferdinand Magellan's expedition that circumnavigated the globe. This era significantly expanded European knowledge of the world and laid the groundwork for future exploration and colonization.