What do these ruins tell us about the Mayan people?

i think that the right answer is the aztecs

polisit can also mean a body of citizens. in modern historiography, polis is normally used to indicate the ancient greek city-states, like classical athens and its contemporaries, and thus is often translated as "city-state". the body of citizens came to be the most important meaning of the term polis in ancient greece.

what

because they can and they wanted to.