I apologize if this has been done before and if this is the wrong forum, but I was wondering the board's view of trans-atlantic butterflies.
I'll illustrate what I mean by that with an example. Say there is a POD in twelfth century Italy. The butterflies fly out, and Eurasia/Africa looks different by the time the age of exploration comes along. But when the ATL conquistadors arrive in America, should they find an OTL native America (adjusting for different discovery dates) or would it be different as well? If so, how would the butterflies get there?