Who was the conquistador who overthrew the Aztec empire and who conquered the Inca?

Hernán Cortés was the conquistador who overthrew the Aztec Empire in 1521. Francisco Pizarro was the conquistador responsible for conquering the Inca Empire, which he accomplished in the 1530s. Both played pivotal roles in the Spanish colonization of the Americas, leading to significant changes in the region's Demographics and culture.