Re: Monogomy/Polygymy
I haven't got time for going into it all, but human babies are vulnerable in the extreme (it's all to do with the large brain size needing them to be born super-premature compared to other species), and need more than 1 parent to care for them for the several years they take to become relatively independent (outside civilisation). A monogomous man would provide better for HER child better than a polygamous man, so evolutionary pressure is on monogamy.
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