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The great ancient civilizations flourished around river valleys because the rivers produce rich fertile soil and a supply of water for irrigation of crops and human consumption. This allows for the agricultural production to be greater and it can sustain more people.
One of the "paganic" beliefs that the Aztecs thought at the prehistoric time would be that in order to continue the sun on moving, it must be fed with a precious fluid, at which time they guessed it could be human blood. They made a lot of human sacrifices for the sun in which these humans are mostly slaves or prisoners.
Answer:
That is your opinion.
Explanation:
It is seeing what you think. I can give you an answer