Caucasians, Asians, Africans (black not Egyptian)
Africans were the only race that never developed a Written Language. They also never developed technology beyond the Bronze Age.
Africans and other Primitive Tribes on each continent are considered primitive because their development stopped at a rudimentary weapons stage, and had NO WRITTEN LANGUAGE.
Even today in Africa, the only written languages are in English, French, Dutch which were languages brought by Europeans.
Primitive Tribes: The Aboriginals in Australia, the South American Tribes in the Amazon, the tribes in Papua, New Guinea.
Americans are conditioned to be politically correct and say that there "are no differences in intelligence" because of the painful legacy of African slavery.
Yet the very reason that the English, Dutch and French could colonize and control Africa was because they had technoloy: Steel Swords, Pistols/Bullets, and Cannons.
and of course, the Sailing Ships that could sail across oceans, with Navigational Compasses, Maps (paper & ink).
Both the Chinese and the Europeans had inventions that made each generation's life more convenient. and Written Languages.
Primitive peoples are called that because their intellectual development STOPPED at a certain point like spears and huts, but the defining factor of a Primitive race is - never developed a Written Language.