Sport in South Korea
Taekwondo, a popular martial sport is often claimed to have historical origins on the Korean peninsula with origins said to have been traced as far back as the 1st century BCE. However, such historical claims are difficult to empirically verify and separate from the influences of neighboring counties. The sport rose to prominence following the end of Japanese occupation with the end of WWII. Formalized rules were established in 1961 and in 1988 the sport became an Olympic event. The name "Taekwondo" literally means "way of foot and fist", although the modern emphasis lies on the kicks. This may be a way to help legitimize the sport's connection to the traditional practice called Taekkyeon, which originated in Korea during the Goguryeo period in the 4th century. Taekkyeon uses open hands and the feet, where as the use of clenched fists is not permitted. The motions are smoother and more curvilinear than in Taekwondo. Although both disciplines start with the sound "tae" in English, there is no relationship.
Taekwondo
In 1962 Jhoon Rhee relocated to the United States and established a chain of martial arts schools primarily in the Washington, D.C. area that practised traditional taekwondo. In the 1970s, at the urging of Choi Hong Hi, Rhee adopted ITF-style taekwondo within his chain of schools, but like the GTF later departed from the ITF due to the political controversies surrounding Choi and the ITF. Rhee went on to develop his own style of taekwondo called Jhoon Rhee-style taekwondo, incorporating elements of both traditional and ITF-style taekwondo as well as original elements. (Note that Jhoon Rhee-style taekwondo is distinct from the similarly named Rhee Taekwon-Do, based in Australia and New Zealand).