alternatehistory.com

Challenge: Have a religion whose primary roots are from the Americas (including islands) and whose roots go back to at least 1600 be one of the top 25 religions in the world.

Note in measuring the top 25, everyone who considers themselves Christian (from the Mormons to the Copts are in one group). To me at least, Voudon doesn't qualify due to having the majority of its roots traceable to Christianity and/or West African beliefs
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