Modern history of East Asian martial arts
Taekwondo was developed from karate for use in the Republic of Korea Armed Forces from 1954. For this purpose, karate terminology needed to be "nationalized". The name "taekwondo" is due to shotokan practitioner and army general Choi Hong Hi. After the Korean War, Taekwondo was further developed into a purely sportive discipline, since 1973 overseen by the World Taekwondo Federation. 
During 1964-1966, Choi Hong Hi continued to promote taekwondo, working to put together a world-class exhibition team. Taekwondo's emphasis on jumping and flying kicks dates to this period. While taekwondo was based off karate, the structural changes made in the 1950s and 1960s were significant, and it cannot now be considered a branch of karate, but is a standalone modern martial art. Taekwondo was presented at the Summer Olympics as a demonstration sport in 1988 and 1992, and became an official Olympic discipline in 2000.
Sang Chul Lee (taekwondo)
Sang Chul Lee (born May 8, 1948) is a Korean born Taekwondo grandmaster 9th Dan, US Olympic Taekwondo head coach, entrepreneur, and owner of the US Taekwondo Center. Sang Chul Lee is a leading taekwondo innovator and missionary and has played an instrumental role in the promotion and development of Taekwondo throughout the United States and the world.