sentences:  Pershits) is the author of the famous textbook for universities “The History of Primitive Society”, which has already passed 6 editions (the last one in 2007).Struggling with sociological theories, the scientist recognized the race existence and its connection with ethnicity.In the division of humans into races, he was traditional and distinguished Caucasians, Negroids and Mongoloids; moreover, he connected Caucasians with Negroids.