Further on the "is XXXXXX on-topic?" discussion, I think it makes sense to be guided by culture and history rather than geography. For example, whereas New Zealand was settled by Europeans about two hundred years ago, and modern New Zealand culture is largely "Western", the indigenous and still-practiced martial arts of the Maori people (who settled the same country about six hundred years earlier) would not be on-topic for this forum; they are Polynesian styles. Likewise, for example, Native American fighting styles.
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