Earth #1 would be rocky at first, but then stabilize because most of these races want nothing to do with each other. Also, [spoiler]The world would end up being predominantly Black; a lot of hispanics, jews, indians, and muslims consider themselves as white due to traditional Caucasiod/Negroid/Mongloid race breakdowns and would end up on Earth #2 because they physically pass as white[/spoiler]
Earth #2 would end in nuclear war or famine, as to two most egotistical races have no minorities to do all their work for them and now only have one target to blame everything on.
