BREAKDOWN
As they felt that it would be virtually impossible to hide the Jiu-Jitsu techniques from Westerners, the Japanese decided to break Jiu-Jitsu down into several styles with limited effectiveness in a real fight.
The arts of Karate, Judo and Aikido were developed from Jiu-Jitsu. These styles were transformed into sports in order to keep secret the most lethal and street effective techniques.
