The problem is, you are, like soooo many before you, confusing significant cultural influence with some sort of inborn genetic trait:
>so far none have done very well in the 100m sprinting event
So you are saying that there is some "karate gene" then? What gene makes Americans poor at soccer while great at Basketball?
The point is, certain cultures value certain sports more than others, and thus those sports attract the pool of athletes from a certain country.
>And great influence in other fields such as finance.
You realize that Jews were basically *forced* to be bankers for a large part of history right? Tax and interest collection as seen as Taboo for Christians, so they made the jews do it. Same thing with science: if you can get run out of town at a moments notice, you tend to value learning and intelligence, as those are things that pack easily.
