What is the significance of hernan Cortes conquering the Aztec?

Hernan Cortes' conquest of the Aztec Empire in 1521 led to the fall of the powerful Aztec civilization in present-day Mexico. This event marked the beginning of Spanish colonization in the region and ultimately contributed to the destruction of Aztec culture and society. It also paved the way for the establishment of New Spain and the spread of Spanish influence in the Americas.