—“A theory I hadn’t thought of before, but makes sense… What if Nationalism is a biological side effect of the unfulfilled need/drive for human males to mate/marry/domesticate. After all, most immigrants are male, of breeding age, and most nationalists are also males of breeding age. Both groups are in competition for native women who have mostly rejected the idea of mating/marriage making a limited social commodity even more rare. Thoughts?”— Anne Summers

Well, if you just said nationalism is the male (pack) reproductive strategy and universalism is the female (herd) reproductive strategy then that would be the most reductive method of expressing the truth. And that nationalism in the current case is yes an instance of the male reproductive strategy.