4. The End of the Aztec Empire (1521)
The fall of the Aztec Empire in 1521 was a pivotal moment in history, marked by the rapid dismantling of a sophisticated civilization. Spanish conquistadors, led by Hernán Cortés, leveraged superior weaponry, strategic alliances with indigenous groups, and the devastating impact of European diseases to conquer the Aztec capital, Tenochtitlán. The siege culminated in the city’s fall on August 13, 1521, leading to the establishment of Spanish colonial dominance in the region (nationalgeographic.com).



