What is the best explanation for the fall of the Aztec Empire?

Question

Responses

The empire fell into a civil war.
The empire fell into a civil war.

Aztec enemies allied themselves with Spanish invaders.
Aztec enemies allied themselves with Spanish invaders.

Aztec soldiers refused to fight because they thought the Spanish were gods.
Aztec soldiers refused to fight because they thought the Spanish were gods.

Spanish conquerors outnumbered the Aztecs.

Answer 1

All of the above explanations contributed to the fall of the Aztec Empire, but the best explanation is the alliance between Aztec enemies and Spanish invaders. This alliance greatly weakened the Aztec Empire and gave the Spanish conquistadors a significant advantage in their conquest. Additionally, the belief among some Aztec soldiers that the Spanish were gods further undermined their resistance and made it easier for the Spanish conquerors to outnumber and overpower the Aztecs.