Thank you for the clarification.
I too only acknowledge the over-rep in those regions I was at pains to specify.
Acknowledging that over-rep makes me racist according to Jim.

You refer to certain customs prevalent in the culture.
I have referred to culture, but took it as obvious that not all aspects of the culture would contribute.
Just those customs related to courtship and marriage that Straw et al alluded to.
I have also stated that I do not know that is the cause, but accept it as the only one provided so far.
That makes me VERY racist according to Jim.

Jim, I blame you for this diversion, which is only of concern to us.
Suppose you really believe I am racist.
Why do you have to keep saying it?
That forces me to defend myself.
Why not just answer my arguments?
Is the problem that you can not?