Topic summary
Racial theories

Extracted from the Wikipedia article Scientific racism.
Racial theories in physical anthropology (1850–1918)
The scientific classification established by Carl Linnaeus is requisite to any human racial classification scheme. In the 19th century, unilineal evolution, or classical social evolution, was a conflation of competing sociologic and anthropologic theories proposing that Western European culture was the acme of human socio-cultural evolution. The Christian Bible was interpreted to sanction slavery and from the 1820s to the 1850s was often used in the antebellum Southern United States, by writers such as the Rev. Richard Furman and Thomas R. R. Cobb, to enforce the idea that Negroes had been created inferior, and thus suited to slavery.