Is Dragon Ball Z popular in Japan and the western countries?

Ask that to me of why and how.

Hell if I know why, but in Mexico, the Mexican Govt. got a C&D by Toei for publically showing one of the movies, which the Mexican govt promptly ignored.

I think it's popular because of its unique material and unique fun

i think that because of japanese people created that anime/manga so it will popular in japan :3