South Korea is much more than Psy’s pop single “Gangnam Style” or the TV series “M*A*S*H,” which lasted three times longer than the actual Korean conflict. It’s one of the most remarkable modern economic success stories. The Eighth United States Army, about 29,000 strong, has long had a front row seat, but most Americans have not. Starting with the ’88 Olympics coming out party, South Korea has arrived. For U.S. OTC brand owners, it’s inevitably an A-list market.