Conquistadors: Conquistadors were Spanish conquerors who played a significant role in Spain's exploration by seeking wealth, claiming land, and converting indigenous populations to Christianity.
Columbus: Christopher Columbus was an Italian explorer who sailed under the Spanish flag and is often credited with initiating Spain's exploration of the Americas when he reached the Caribbean islands in 1492.
Treaty of Tordesillas: The Treaty of Tordesillas was an agreement between Spain and Portugal that divided newly discovered lands outside Europe. It aimed to avoid conflicts between these two European powers by establishing their respective spheres of influence.