So why do we call white people Caucasians? The term was popularized by the German scientist Johann Friedrich Blumenbach, who in 1795 divided the human species into five races:
Caucasian, the “white” race;
Ethiopian, the “black” race;
American, the “red” race.
Mongolian, the “yellow” race; &
Malayan, the “brown” race;
He considered the Caucasians to be the first race on Earth, consistent with the common conception of the Caucasus as a place of human origin.