27. The main difference between the Maya and the Aztec civilizations was the Aztecs had a centralized government, while the Maya had city-states with their own rulers.

This statement is correct. The Aztec civilization, also known as the Mexica, had a centralized government with a hierarchical political structure. They were ruled by an emperor and a powerful ruling class, who governed the vast empire from their capital city of Tenochtitlan.

On the other hand, the Maya civilization was made up of numerous city-states, each with its own ruler. These city-states were independent and had their own governments, although they were often interconnected through trade and alliances. The Maya civilization did not have a centralized political system or a single ruler governing the entire Maya territory.

Moreover, the Maya civilization had a more advanced writing system and made significant contributions in the fields of mathematics, astronomy, and architecture. The Aztecs, on the other hand, were known for their vast military empire, agricultural innovations, and the practice of human sacrifice.

Overall, while both civilizations were Mesoamerican and shared cultural similarities, the main difference lies in their political organization, with the Aztecs having a centralized government and the Maya consisting of decentralized city-states.

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Sorry for any confusion. To clarify, the statement "The main difference between the Maya and the Aztec civilizations was the Aztecs had a centralized government, while the Maya had city-states with their own rulers" is actually true.