The question is not travel but residency of local populations, unless one thinks that every travelling salesman in antiquity sowed his seed along the path. My hometown of Paramus lies only 4 miles from the George Washington bridge. Recognition of distinguishing physical traits does not make one a racist. But to pretend that there are no typical physical features of different ethnic groups is unscientific nonsense. But once those differences have developed all one needs is the human animal's tendency towards tribalism to keep those features inbred.
Tribal solidarity is what Israelite history was all about.
Without it Jews would have disappeared as a distinct people a long time ago. But Bob, that's not what Mark G., Jim Crutchfield or I have have been trying to say. All rights reserved.