What do YOU think could possibly happen from this premise?

I've posted this story concept of mine twice already, but I'll post it again. Here we go.

What if there were 3 planets in paralell universe that had humans that end up looking Negroid on one, Caucausoid on the other, and Oriental/Mongoloid on the last? And what if each had an overaching irrefutable theology that were true in their universe, but wrong in the other? And what if there were dimensional wormholes that allow one to travel between these worlds?

Okay, this is in a Late Middle Ages time period (about 1100 AD), and the military power is pretty even. Now, what do you think would happen if people from the different planets crossed through these? (I haven't started the story yet, and I'm curious to hear the possible results of initial contact)

edited 2nd Sep '11 8:59:23 PM by redandblack64

Their attitudes towards race would be a lot different than in history, what with not knowing it's even a thing and all.

They might actually be less racist if their societies are similar enough. Do all three Earths have unique attributes other than race?

edited 2nd Sep '11 9:13:20 PM by RTaco

The humans have their subraces, such as the Caucasoid world having darker skinned people (like Arabs) in the warmer regions, and the Negroid world it's paler skinned people in coolet regions. These humans don't all look the same, and have different cultures and religions that are different interpretations of the same theology.

I'm not sure what other differences these worlds would have outside of race, as I'm on the fence on whether to use real-world religions or just make it up, using those as a starting point.