@Fil Albuquerque,
This Korean thing is a tangent.
My point is that every culture that has been "successful" over a significant period of time has done so by subjugating other cultures. This includes the Korean culture which has existed for thousands of years.
You are looking at the last 50 years of a culture that has existed for many thousands of years to find some "success". I agree with you that the southern half of Korea is mostly free. I disagree that it is a valid example of culture rising to dominance on its own strength based on merit. The fact is that before the US stepped in in WWII Korea was wholly subjugated by Japan, and the since WWII the US has pumped in billions of dollars of military and economic aid to keep South Korea "free".
My point is that the cultures that have become successful with their own strength have all reached economic prominence through times of genocide and/or slavery. This includes Ancient Rome, the Incas, India, China, Israel, Japan, Russia, England, Spain, the United States.