I personally belive this to be the case. I cam across an interesting article here on HN posted about the link between polygamy and upheaval in the Economist ht

I personally belive this to be the case. I cam across an interesting article here on HN posted about the link between polygamy and upheaval in the Economist https://www.economist.com/news/christmas-specials/21732695-plural-marriage-bred-inequality-begets-violence-link-between-polygamy-and-war https://www.economist.com/news/christmas-specials/21732695-p... . Whilst its not evidence, it certainly makes the case.