The answer's in the article: The stories are suggested to have originated in one culture - our common ancestor in Africa.
The question is in the article. No one knows the answer.
Ok, fair enough. Like a lot of science the 'answer' is merely the most plausible hypothesis. I guess it's that or...
@paininthe started
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The answer's in the article: The stories are suggested to have originated in one culture - our common ancestor in Africa.