It's funny that somebody somewhere drew a map and labeled it with what he perceived as culture differences that people have. If I understand, this is where the majority of the people in these areas, ancestors came from.
Who was the person(s) that collected this data? What were their qualifications for doing this kind of research? Did they do a thorough search of where the people came from that lived in these areas? What were the questions they asked? (Surveys can say what you want them to, by the questions asked) What portion of the population did they question? The questions could go on, and on, and on!
This is just someones opinion, best guess, what they read somewhere, etc...
It really doesnt mean a thing!
