There are many differences between the Aztec and Spaniards like their religion, economy, weapons, war strategies, education, expand territories, hierarchy etc.
Step-by-step explanation:
The Aztec and Spaniards were different from each other so when the messengers were send to the Spanish, their impressions were recorded. The messengers came back and described how the people looked. They said their natives skin is white, hair yellow, beard long and yellow, Moustaches also Yellow, Curly hair.