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In page Martial arts:

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The question of "which is the best martial art" has led to inter style competitions fought with very few rules allowing a variety of fighting styles to enter with few limitations. This was the origin of the first Ultimate Fighting Championship tournament (later renamed UFC 1: The Beginning) in the USA inspired by the Brazilian Vale tudo tradition and along with other minimal rule competitions, most notably those from Japan such as Shooto and Pancrase, have evolved into the combat sport of Mixed Martial Arts (MMA).[citation needed]