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In page Human sacrifice in Aztec culture:

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According to Bernal Díaz, the chiefs of the surrounding towns, for example Cempoala, would complain on numerous occasions to Cortés about the perennial need to supply the Aztecs with victims for human sacrifice. It is clear from his description of their fear and resentment toward the Mexicas that, in their opinion, it was no honor to surrender their kinsmen to be sacrificed by them.[4]