Better transportation affected the growth and urbanization of cities by allowing more people to travel, which in turn led to more people settling down in these cities to start a new life.
Better communication affected the growth and urbanization of cities by allowing people to understand each other better, which led to more people coming to these cities and socializing, which improved economy. People who can communicate can perform business better and communicate outside of the city, drawing more people there.
One of the "paganic" beliefs that the Aztecs thought at the prehistoric time would be that in order to continue the sun on moving, it must be fed with a precious fluid, at which time they guessed it could be human blood. They made a lot of human sacrifices for the sun in which these humans are mostly slaves or prisoners.
Answer:
They formed a civilization that will eventually become an empire.
