buddism
Shinto
The earliest religion in North America was shamanism.
Yes, the earliest religion is shamanism.
Christianity
The earliest religion in society was animism.
Hinduism is the earliest trace of religion in India.
Jesus and all the earliest disciples were Jews.
Probably Hinduism.
Animism
The earliest-known organized religion may have been the idolatrous cults that were supported (or initiated) by the reigning monarchies in Sumeria, the earliest dynasties in Egypt, and in other areas.
Then we are all screwed.