https://www.youtube.com/watch?v=vbAjZTJn8-U
TL;DR — The Spanish conquest of the Aztec Empire, led by Hernán Cortés, began in 1519 with the arrival of conquistadors in Mexico. Despite initial diplomatic overtures and the Aztecs' belief that Cortés might be the god Quetzalcoatl, tensions escalated, leading to conflict, betrayal, and ultimately the fall of the Aztec capital, Tenochtitlan, in 1521. The conquest was aided by superior Spanish weaponry, strategic alliances with disgruntled indigenous groups, and the devastating impact of European diseases like smallpox.
Takeaway — The Spanish conquest of the Aztec Empire was a complex event driven by military technology, strategic alliances, and devastating disease, resulting in the collapse of a major civilization and the dawn of a new colonial era.