The Age of Exploration was a time period when Europeans began extensively exploring the world through advances in shipbuilding, navigation, and sailing technology. Countries like Portugal and Spain led this exploration, with Portugal finding routes around Africa to India and Spain's Christopher Columbus accidentally discovering the Americas while seeking a western route to Asia. This exploration led to massive exchanges of plants, animals, technologies, and diseases between the Old World and New World, as well as the rise of the transatlantic slave trade through the "Triangular Trade" system between Europe, Africa, and the Americas.