As far as professional weight lifting goes,a lot of european countries,mostly eastern europe have a long tradition of having the best coaches and state sponsored programs. Kids start early and there's a lot of prestige involved with winning national,european and world titles. The best weightlifters have a body type that suits the mechanics of a jerk or clean better,asians and slavics tend to have those body types, in the lower 5ft range,compact,short limbs.

No, If genetics was the root Africans would be dominating strong man comps