"Blade Runner " of detective noir ripped off from Aldous Huxley's 1932 classic and "Agent Carter" about Tony Stark's Mother of a Eurocentric Politically Correct popular war are examples of how 1932 to 1948 is regarded as a romantic adventure period while The Last "Air Bender" is an example of how a "Steam Age" civilization is regarded as primal beginning.
Khurchitov Institute did a study of radio carbon dating along with proton decay to suggest human history began as recently as the 15th Century so who knows.
Genetically an culturally East Europeans and Altaics or Northeast Asians overlap.
"Scientific American" November 1991 has a genetic chart on how Europeans or White Race are genetically closer to both Koreans and Northeast Chinese than hey are to Semites or Middle Easterners.
Illustrations by Jon Corbino, Charles Brock, Thomas Moten, and Warren Chappell are similar.