What were the religious beliefs of both the Aztecs and Spanish?

hmm...I would say that the Aztecs believed in many gods. They worshiped the son, the stars, the moon, the trees..etc. (or things like that)---Polytheism.

And i would say that back in the earlier centuries of this ever-changing world, the major / principal religion for the Spanish (and the majority of the European countries) was Christianity..or to be more specific. Roman Catholic. ya mum is fat