A Spanish conquistador was a Spanish explorer and soldier who played a key role in the colonization of the Americas during the 15th and 16th centuries. These individuals sought wealth, land, and glory for Spain, often leading expeditions that resulted in the conquest of indigenous civilizations. Notable conquistadors include Hernán Cortés, who conquered the Aztec Empire, and Francisco Pizarro, who defeated the Inca Empire. Conquistadors were motivated by the promise of riches, such as gold and silver, and the desire to spread Christianity. Their actions significantly impacted the cultures and populations of the Americas, leading to the establishment of Spanish colonies and the spread of European influence in the New World.