For me religion have been created by human, naturally for explain, understand the environment around them. How can you explain sky,
Thunder,
Rain, snow, sea when you dont know sciences and all ? Then it's about different way of thinking, judaism, christianism and islamism is about the believe in old text that mention one
GOD to be the creator of
Earth, nature, sky and human race. With that they had more declinaison, for christians, Jesus was
The One announced into a prophecy, he is the son of
GOD, for judaism or islamism its something other (i dont know what) but they all are into the same point, it's all about one
GOD named:
GOD, then you got some other cultures, one of them is paganism and they believe into a
GOD for each part of the earth. Romans (before christianism) had their own pantheon of gods (inspirated by greek) and so
Neptune is the
GOD who created sea and oceans, Mars is
GOD of war etc.. Nordic and Celtic too (with their own gods and rites)all this is about what each people believe into ! and Christianny was imposing to all their believes. it's what I don't like with that, I don't think anyone got the right to impose you whatever, personally i'm athéeist, but by
Fact because im french i'm christians, Im very interested of cultures and religions and would love to know more about my ancestor, I know about celtic that they were very close of natures, druids were their mentor..i dont know very much, hopefully we got some Asterix et Obelix to read
edit : I don't know what were the first humans into, but like you said, i think they all borned paganist, because it was the main culture of everybody, every
Nation before religion cames up.