The rule in this empire was monarchy and the ruler took all the decisions by himself without any consultation of the public, this made the people go against him.
Explanation:
The government in the Aztec empire was monarchy government. This meant that there was a single ruler in the empire in the whole country. All the important decisions regarding the empire were taken by this ruler only.
This meant that the ruler did not take any consultations of the people who were living in that empire before taking the decision even if it affected the citizens. This made the people of the empire go against the ruler and they wanted a change in the ruling of the empire.