Do Native American tribes copy other tribes?

I'm looking at old pictures of Native Americans from the 1800s and I'm noticing that a lot of tribes weren't wearing moccasins but went barefoot, wore sandals or wore regular shoes but now today you see all of them having mocassins even though it seems like many tribes never wore them at all. Also, is... show more I'm looking at old pictures of Native Americans from the 1800s and I'm noticing that a lot of tribes weren't wearing moccasins but went barefoot, wore sandals or wore regular shoes but now today you see all of them having mocassins even though it seems like many tribes never wore them at all. Also, is pow-wow regalia traditional clothing or not because it seems like all tribes wear almost the exact same regalia, it's even the same regalia that the tribes in Canada wear at their pow-wows. Do they copy to fit in? Why is it?
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