You can’t. You can simply avoid the problem.
All that happens in mixed race cultures, is that castes replace races. I can’t find anywhere any attempt has worked and hasn’t resulted in the total collapse of the civilization. When you increase the size of the polity you get classes.
That’s how it is for the simple reason that some people are more genetically desirable in every way than other peoples, and that’s what social class means: reproductive, associative, cooperative, economically cooperative, politically cooperative, militarily cooperative desirability.
Each of us has a social market value and that social market value is what we call our class. We have higher sexual and social market value within group than across group except at the extremes. The desirability of different subraces is well documented, and is determined by ratio-proportionality and degree of neoteny.
The only way to avoid the problem is to** segregate within states, or separate into separate states.**
The science behind this reality is quite simple:
1 – Races and Subraces have different sized underclasses and **different distributions** around the mean in the personality traits that are genetically determined and largely immutable: a) intelligence, b) industriousness, and in rates of sexual development and depths of sexual development, and the retention of those features that illustrate retention of childhood features. (we have been domesticated just like other animals. We are no different. Some groups are more domesticated (lower testosterone, lower impulsivity, lower and slower sexual development, and therefore greater agency (self discipline of our emotions and impulses).
2 – Because of these differences **we need to produce VERY different commons** (manners, ethics, morals, norms, traditions, laws, institutions, education and training in the intuitionistic [what we call religion], in physical training, and in skills training, and in occupational training.) The median (average) (66% majority) determines the demand for formal and informal institutions (listed below).
3 – **Proximity Creates Animosity **because of the different status signals in and across groups, and the different rates of development both genetically, informatively, and culturally. Groups that are happy with their condition separately become hostile in proximity, and more hostile in cohabitation, and more hostile in political competition. This is true everywhere on earth.
4 – Because of these differences we need **very different political orders** – from the very liberal northern European high trust, to the very disciplined as we see in religious regions, to the nearly military needed in others.
I could go on but the end is the end: Trying to eliminate races always and everywhere produces a **race to the bottom**. Creating many small nation states that are little more than corporations that serve the needs of their kin group and that kin group’s distribution will produce a** race to the top**.
There is a very good reason why Europe evolved faster than the rest of the world combined in both the ancient and modern worlds: small homogeneous states. **Monopolies are always bad**. They are even worse in federations and empires.
China is the interesting exception since the Han slowly conquer and integrate near neighbors, and are currently in the process of doing so to the remaining border nations. The Han are the largest ethnic group in the world. And they conquer and ‘make disappear’ every group possible. The Indians, who were (at least in what is today’s Pakistan) one of the oldest civilizations, were not able to progress – we don’t understand why yet but probably demographics. The Chinese stagnated despite good demographics. The Arabs destroyed every great civilization of the ancient world (North African, Egyptian, Levantine, Mesopotamian, Persian, Byzantine, (and as a consequence Roman by raids and slave taking) and ended by 1200, with the remains of their empire was only preserved by the new population of Turks who were forced out of china’s territories – but even the Turks declined rather quickly, and the middle east is still in the 7th century in most ways. South Americans are falling behind again. East Africa was on the cusp of development when the Europeans arrived and pitted the emerging civilizations against each other.
**Races** are a good thing. **Subraces** are a good thing. **Tribes** are a good thing. **Clans** are a good thing. **Families** are a good thing.
You can choose between kingroup-states, or Corporate States. You can choose between small very different states, or large homogeneous states. You can choose between collapse under political monopoly, or rapid progress under political diversity. Because in the spectrum from dictatorship to anglo rule of law you must possess an increasingly optimum demographic as you move from dictatorship to liberty.
**The only value of scale is military conquest**.
The value of homogeneity is psychological, not real.
The effect of diversity in a polity that has access to political power is always the same: collapse.
The best countries to live in have **small homogeneous populations** with very **small underclasses**, high median **intelligence**, and well developed **neoteny**, without hostile **competitors** on their borders.