Judo was created, along with many other martial arts, by the japanese. They invented martial arts for the sole reason that they were smaller than all the foreign visitors. So they couldn't fight back...
In Mikage near Kobe in Japan.
Judo is a modern martial art and combat sport created in Japan in 1882 by Dr Kano Jigoro
1882 in Tokyo by Dr. Jigoro Kano
Proffesor Jigoro Kano founded the Kodocan school of Judo in 1883 in Tokyo Japan.