Shotokan karate was brought to Japan from Okinawa.
the food, costumes and karate(maybe)
Chitose Tsuyoshi
Karate Champion Billy Blanks invented Tae Bo in 1976.
The oldest form of Kenpo taught in American schools is Kenpo karate. In 1949, William K.S. Chow invented it
Karate comes from Okinawa. They originally translated it to mean China Hands, but today it is translated as Empty Hands.
It was a style of karate brought to Japan from Okinawa by Gichin Funakoshi. He modified Shorin Ryu karate to fit the what was needed in Japan. It was named after his pen name Shoto and the name for a place, Kan.
It had no effect on the Edo period. Karate was a martial art in Okinawa. It did not go to Japan until the 1930's.
As far as I know (from listening in karate class) martial arts started in China and were brought to Japan along with calligraphy and art. However, the stereotypical, "karate" (there are many many different forms) was "invented" in Japan.
It was a combination of traditional Okinawan wrestling and Chinese White Crane Kung Fu.
The romans.
The Americans.