Which two American civilizations did the spanish conquer in the 16th century?

In the 16th century, the Spanish conquered the Aztec Empire in present-day Mexico, led by Hernán Cortés in 1519-1521. They also conquered the Inca Empire in present-day Peru, with Francisco Pizarro leading the expedition that resulted in the fall of the Incas between 1532 and 1533. These conquests significantly expanded Spanish territories in the Americas and had lasting impacts on indigenous populations and cultures.