I mean, look at those:
And look at this:
I'm not saying they're ugly or bad people. They just look so different.
Most Helpful Guy
Why do you have the hair colour you have?
Why are you as tall as you are?
More or less everything is genetics. :)0
Most Helpful Girl
They have largely reproduced with people of their own race, so their gene pool and therefore their features have not changed a much over time. This is just my educated guess. I am not a scientist or anything, but it makes sense to me.1