What did herdan cortez discover?

Hernán Cortés is best known for leading the expedition that caused the fall of the Aztec Empire in present-day Mexico in the early 16th century. He arrived in 1519 and ultimately captured the Aztec capital of Tenochtitlán in 1521, claiming the territory for Spain. This conquest significantly expanded Spanish influence in the Americas and marked a pivotal moment in the history of European colonization.