U.S. World Class Taekwondo Association has been offering instruction and training Taekwondo since 1988. Headed by Chief Grand Master Jay K. Shin & Chief Master Rick W. Shin
The World History Association (WHA) is an academic association that promotes the study of world history through the encouragement of research teaching and publication. It was founded in 1982.
The World Cube Association governs competitions for mechanical puzzles that are operated by twisting groups of pieces commonly known as twisty puzzles. The most famous of these puzzles is the Rubiks Cube invented by professor Rubik from Hungary. A selection of these puzzles are chosen as official events of the WCA.