I don't quite know how, but it's probably rebels. Wacky AI behavior is almost always caused by rebels.But it's Protestant Tribal Kingdoom.
Jerusalem moved to the Andamans? Mildly confused separatist rebels. The Pope is Hindu now? Religious rebels and bankruptcy.
I don't quite know why it ended up being a tribal kingdom, but my assumption is:
Castile moved their Asturian protestant minority to America and spawned Asturian separatist rebels who won. Since Asturias did not exist before and therefore could not have any colonial cores, the separatists formed Asturias proper in the New World. Since the new tag was in the new world and neither a colonial nor a former colonial nation, the game thought that it has to be a native tribe, so it passed the tribal kingdom reform.
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