The picture below shows the Nordic skull of a man who lived thousands of years ago at Gobero https://en.wikipedia.org/wiki/Gobero about 500 miles northwest of Lake Chad in the Sahel. The Nordic race immigrated from the Sahel to the Fertile Crescent about 18700 ybp because of a long lasting drought called the Last Glacial Maximum, and became the first farmers. They migrated to Europe during the Holocene for various reasons, mainly in order to avoid being massacred or enslaved by Semitic herdsmen.
The common ancestors of the Kiffians and Nordics evolved in the Sahel for long enough to have created the tools known as Aterian https://en.wikipedia.org/wiki/Aterian, and longer than the ancestors of any other extant Eurasian race. A nasal spine and nasal sill or dam helped the noses of Kiffians and Nordics to humidify and cool the hot air of the Sahara before it entered their lungs. That Pygmies, Negroes and Mongoloids have a smaller nasal spine, and no nasal sill or dam, shows that they do not belong to the same species of mankind as the Kiffians.
In modern craniofacial anthropometry, the features that typify the skulls of Negroes include a broad and round nasal cavity; no dam or nasal sill; Quonset hut-shaped nasal bones; notable facial projection in the jaw and mouth area (prognathism); a rectangular-shaped palate; a square or rectangular eye orbit shape and large, megadontic teeth.
Everybody's ancestors came from Africa. so all Americans can be as proud of being "African American" as any mulatto.
Most biologists and I practically define a "species" as a population of organisms that are GENETICALLY more similar to each other than they are to members of other genepools. There are more species of mankind than there are of gorillas therefore. Some of this diversity may disappear within a few generations because of miscegenation between all of the species of mankind except the one that was chosen to be above all of the others.