I dont understand about it. Why?

http://www.youtube.com/watch?v=Nm9_BjSoSg4

And Korean is claiming all things are Korean Original...these are born in Korea.
Kendo, Judo, Karate, Gundam, Sushi, and many Japanese popular cultures, also the evolution of the human species.

Korean has 5000 yrs history. It was wrote in their history book of Jr. high school.

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Is that what's happening in this thread?