Where is the Baha'i Faith in the pie chart?
We're working on it. We are much younger than the others.
And which manifestation taught these people all these multiple gods?
None of them.
That is not doing a good job at teaching that there is only one God. That is why I'm thinking it is more likely these people made up their own religion by what they observed in nature.
The 'One God' Abrahamics are in the majority and growing the most rapidly.
And how do they usually progress to a more sophisticated belief system? I think most of the time they got conquered and the new religion was forced on them.
Conquest has been an undeniable part of history. However, alone that does not account for the great world religions having endured millennia. They have each produced a narrative and theology that have brought meaning, hope, and inspiration to their followers.
The purpose of each Manifestation of God has been to“educate the souls of men, and refine the character of every living man…”
Manifestations of God | What Bahá’ís Believe
Is that part of progressive revelation, or do you have a different take on it?
I think we need to go back to the purpose of religion.
Religion, writes Baha'u'llah is “the chief instrument for the establishment of order in the world, and of tranquillity amongst its peoples.”
The Purpose of Religion | What Bahá’ís Believe