The document discusses the major factors that led to the Age of Discovery and European expansion between 1450-1700. Some key developments included advances in navigation technology from the Scientific Revolution like the caravel ship and magnetic compass that enabled long distance travel. Motivations for exploration included seeking gold, glory for their nation, and spreading Christianity ("God, glory, and gold"). Portugal led initial exploration down the coast of Africa. Major explorers included Columbus, who sailed for Spain and reached the Americas believing he found India, and Magellan, who was the first to circumnavigate the globe. European powers established colonial empires through conquest and the slave trade had devastating impacts on African societies. The Columbian Exchange also introduced new crops, animals