It depends on the religion.
well where do you begin? location skin tone food different species economy army religion
location,location,location
It is the native religion of Japan and was once its state religion.
Judaism did not begin within another religion.
India
Islam
About 550BCE
Polytheists.
It began in India. This religion is the oldest religion in the world.
As the Greeks studied science, how did it begin to change their relationship to their religion and to their gods?
=500 B.C.=
Ireland, where the Celts were.