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.
Choi Hong Hi
Choi combined elements of Taekkyeon and Karate to develop a martial art that he called "Taekwon-Do" (태권도; 跆拳道), which means "foot, fist, art" or "the way of hand and foot" and it was so named on 11 April 1955. Choi founded the Oh Do Kwan, and held an honorary 4th "dan" ranking in the Chung Do Kwan. Due to accusations of dishonesty, Choi was stripped of his rank and position in the Chung Do Kwan. During the 1960s, Choi and Nam Tae Hi led the original masters of taekwondo in promoting their martial art around the world, though these would be only the first of many such endeavors.