Here's one for the True Believer?

So we see in the bible since the beginning if you look at the names of places and mountains that the entire biblical saga takes place on that side of the world (Eastern) and the continent is obvious. now my question is this. If in the beginning the world went evil so bad that god had to wipe us out ..ok and then god saved Noah and his family (were just talking the humans aboard) Noah and his family being of Hebrew decent I believe that makes them Jewish. so we have a hand full of Jews flailing around on torrent seas for forty days and forty nights and they happen to land on the same continent again on a familiar mountain then come down and restart civilization ..well whatever in any case..where did al of the different races of people come from. you don't get black people or Chinese or American Indians from a handful of Jews no matter how you slice it. And if you think that it was so far back we might say LAND bridges well wrong again .And Babylon tower changed the tongue not race.