Which was a practice shared by the Maya, the Inca, and the Aztec civilizations?

The Maya, Inca, and Aztec all built temples where people practiced religious worship. Quipus were used by the Inca, not all three civilizations, and the Maya and Aztec had city-states while the Inca built a large empire. Stone roads were especially associated with the Inca, not all three.

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