Why were the Spanish able to defeat the Aztec and in can empires?

The Spanish were able to defeat the Aztec and Inca empires due to a combination of superior weaponry, strategic alliances, and devastating diseases. The Spanish possessed advanced weapons, such as firearms and steel sWords, which the indigenous forces had never encountered. Additionally, the Spanish formed alliances with other indigenous groups who were rivals of the Aztecs and Incas, further weakening their resistance. Lastly, diseases like smallpox decimated the indigenous populations, significantly undermining their ability to resist conquest.