Final answer:
Carolus Linnaeus, in the 18th century, classified humans into different races in his work Systema Naturae, but modern biological anthropology has shown that race is not a biologically accurate concept.
Step-by-step explanation:
The Systema Naturae classification, which included a categorization of humans into what we now refer to as different races, was developed in the 18th century by the Swedish botanist, zoologist, and physician Carolus Linnaeus. Linnaeus built upon Aristotle's earlier work to create his own system of taxonomy, which for the first time classified living things including humans, into hierarchical categories based on shared physical traits.
Biological anthropology has since demonstrated that the concept of race is not biologically accurate. Anthropologists and geneticists point out that human traits vary along a spectrum and that designating distinct racial categories based on a few superficial physical characteristics is scientifically invalid. Notable scientists like AgustÃn Fuentes and Nina Jablonski have researched the global distribution of human traits to show that race is a social construct rather than a biological reality.