The U.S. Black/White Color Line

North America's "Race" Notion is Unique and Important



The United States is the only nation on earth that has preserved for over three centuries a genetically discontinuous enclave of mostly African ancestry within a larger population of European ancestry. The phenomenon demands study.

The United States is the only nation on earth that has preserved for over three centuries a genetically discontinuous enclave of mostly African ancestry within a larger population of European ancestry.

Unique in the Western Hemisphere

The U.S. endogamous color line is unique in the Western Hemisphere. After the New World’s aboriginal population was nearly wiped out by diseases to which they lacked immunity, it was re-populated by eleven million African slaves and three million European colonists. In every nation but one, the populations promptly interbred, yielding today’s unimodal genetic admixture scatter diagrams.

Where African slaves were few, as in Argentina or Chile, scatter diagrams show a single cluster skewed towards European admixture. The average Argentinean or Chilean has about 94 percent European and 6 percent African DNA markers. Virtually no long-established families look Black.

Where African slaves were many, as in Haiti, scatter diagrams show a single cluster skewed towards African admixture. The average Haitian has mostly African DNA markers and few European markers. Few long-established families look White.

Where colonial populations from Europe and from Africa were roughly equal, as in Puerto Rico or Brazil, the single genetic cluster centers on the 50-50 mark. About one family in ten looks Black, about one in ten looks White, and the rest look Hispanic or mixed.

Only the United States has a bimodal cluster diagram showing two genetically distinct groups. Most of the U.S. population has negligible detectable African DNA, while the enclave (about one-eighth of the population) is of overwhelmingly African ancestry.

Unique Around the World

The U.S. endogamous color line is also unique outside of the Western Hemisphere. Other former Euro-African colonies around the world officially recognize citizens of dual ancestry. Only in the United States do citizens of mixed Afro-European ancestry lack legal existence. Only in the United States do people say that someone “looks utterly White but is really Black,” in some invisible sense. In other nations, if you look White you are White. In other nations with populations from both Europe and Africa, the intermarriage rate is about 40 percent. This 40 percent exogamy rate is typical of ethnic assimilation of any immigrants everywhere. In contrast, U.S. Black/White intermarriage is under 4 percent and has been under 4 percent for centuries.

The only phenomenon on earth that approximates U.S. society’s harsh enforcement of its endogamous barrier is the Hindu caste system. Oddly, the latter is falling in importance due to efforts by the government of India state to outlaw it. In contrast, the U.S. color line is increasingly enforced at every level of U.S. government, and any opposition to involuntary dichotomous “racial” classification by the State is usually deemed “racist” and often ruled to be illegal.

So Strange That it Demands Study

The U.S. endogamous color line is so strange that it demands study. Questions crying out for answers include: When was the unique U.S. endogamous color line invented? Where? By whom? Why? Was it the same in the many culturally distinct antebellum regions of the nation (such as Spanish Florida or the Francophone Gulf Coast)? Given the factual reality that one-third of White Americans and all Black Americans are of mixed Euro-Afro ancestry, by what yardstick do Americans shoehorn themselves into one side or the other of the color line? And, most importantly, why do Americans so tenaciously defend their dichotomy?

What makes it bizarre is that, to Americans, their dichotomous color line (which has somehow managed to preserve a unique genetically African enclave for centuries) is the norm. In their minds, everyone else on the planet is out of step. And so Americans seek explanation for their nation’s unique phenomenon in studies of slavery (historically ubiquitous), colonialism (globally ubiquitous), or “racism” (taking care to avoid defining the term). It is as though there were an odd smell in their own home but no one else’s, so they seek its source in every neighbor’s house but not their own.

Again, what is unique about the United States is not ethnicity, nor identity politics, nor White mistreatment of Blacks, nor Black hatred of Whites. What is unique and so demands explanation is the very existence of two genetically distinct endogamous groups within the same nation.
For more in this topic, see Features of Today’s Endogamous Color Line.

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