Which factors led to the growth of the Aztec economy? Choose four correct answers.

The Aztec used war as a way to increase their wealth.
A network of trade routes developed between population centers.
The Aztec shared their wealth with neighboring city-states.
The Aztec created a system where wealth was distributed evenly among all people.
Aztec markets were watched by merchants acting as spies for the government.
City-states captured by the Aztec were forced to pay tribute to Tenochtitlán, making it wealthy.