Answer:
d. a collection of semi-independent territories.
Explanation:
First, we must say that the Aztec Empire (or the also known Mexican Empire) emerged as a series of alliances of various peoples belonging to Central America and more specifically is linked to this civilization with the valley of Mexico and Lake Texcoco.
From this union of several peoples, the Aztecs would soon stand out for the use of force for everything, thus they managed to impose their customs on the other two allies that were the Mexica and the Acolhua.
