A sweeping reductionism that is nevertheless true

“Biology is the hardware, culture is the software”

Here is a sweeping reductionism that is nevertheless true: as long the "norms" of human life were based on human nature as defined as closely as possible to how tradition and now neo-Darwinist sociobiology define the norms of human nature, the decay, decline, and collapse of Ancient Greece, the Roman order, the medieval world, and our own time, would not have taken place as it did. 

This means that the norms of human nature are basically being kin-centered, gender defined, age-graded, heterosexual marriage-making, hierarchical, ethnocentric, even xenophobic, and religious-making, among other things, with group-selection or ethnic selection as the primary unit of selection. Cultures can operate for a time with behavior that goes against this basic human nature, with such experiments as Marxism, but cultures are eventually pulled back by the biological and genetic leash of real human nature to cultures that better reflect real human nature, and humans then work within and adapt to the environments they find themselves living in.

What is missing today from this list of the norms in the modern liberal worldview? Missing is being gender defined, heterosexual marriage-making, ethnocentric, and religious-making, among other conservative things, with group-selection or ethnic selection as the primary unit of selection. So we can see that because we have abandoned human nature as defined in the past by tradition and now by neo-Darwinist sociobiology we are headed for collapse resembling the collapse of Ancient Greece, the Roman order, and the medieval world.   

Given these norms of the human nature this suggests that the best political configuration for humans beings to live within is an ethnopluralism of ethnostates. That is what we should be developing and maintaining over the long run. An ethnopluralism of ethnostates or regions could be established legally in the United States from our constitutional separation of powers and states, and protected by federalism.