Which statement best describes the political structure of the ancient aztecs?
a. the aztecs developed city-states that were powerful but independent.
b. the aztec civilization included different groups unified under a single religion. c. the aztec civilization was ruled by an emperor and had about four hundred tribute states.
d. the aztecs were ruled by representatives from different city-states.

C.The Aztec civilization was ruled by an emperor and had about four hundred tribute states.

Explanation:

The aztecs were a warriors civilization they conquered the vast majority of the mesoamerican tribes and were all under their control, they took ributes from them and had the greatest capitol city in the americas, were very organized and had a centralized control government, this was the emperor who decided and guided the empire.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.