Someone, I can't remember who and at what website (perhaps it was Alternative Right) posited the thesis that the success of Anglo-American civilization is due to the nuclear family being the dominant model of family organization, rather than the extended family. Was nuclear family always dominant in the United Kingdom, at all levels of society? And even if this is true, can such a causal relationship be established? Might it not be the case that the success of Anglo-American civilization (as measured in wealth and power) was due to the success of those forces concentrated control, which were able to do so because there was no effective opposition from other parts of society? Hence, the nuclear family, rather than being a director contributor to that sort of success, was too weak to prevent centralization and industrialization (and the concomitant loss of political and economic freedom).