The document summarizes the Age of Exploration, beginning with the Middle Ages when exploration was unimportant. It then discusses how feudalism brought stability to Europe and the Crusades exposed Europeans to new ideas and cultures. The Renaissance era saw a renewed interest in exploration. Portugal discovered a sea route to Asia, making them wealthy, which motivated other European powers to explore. Christopher Columbus's voyage in 1492 trying to reach Asia accidentally discovered the Americas, launching the Age of Exploration and European colonization of the New World.