Question

3. Why was the Aztec Empire unstable?

Answer 1

Answer: The Aztec Empire grew as it conquered neighboring states, but that growth came at a cost. ... During the time of Montezuma II's reign the empire was at its peak, but so was the resentment of the subject tribes. Constant rebellions were waged. Although Montezuma defeated the rebellions, they weakened the empire.

Explanation:▶CREDIT/SOURCE◀

https://www.britannica.com/summary/Decline-of-the-Aztec-Empire

Answer 2

The Aztec Empire grew as it conquered neighboring states, but that growth came at a cost. ... During the time of Montezuma II's reign the empire was at its peak, but so was the resentment of the subject tribes. Constant rebellions were waged. Although Montezuma defeated the rebellions, they weakened the empire.