It advanced the now-discredited idea, then prevalent in contemporary scientific racism, that so-called "Mongolian imbecility," a form of mental retardation now known as Down syndrome, was an atavistic throwback to the more primitive Mongoloid race.
Mongol Empire | Mongol | Mongol invasion of Poland | Turco-Mongol | Mongol Rally | Mongol invasions of Vietnam | Mongol invasion of Rus' | Cults in Our Midst | Mongol–Langam languages | Mongol invasions of Japan | Mongol invasion of Rus | Mongol invasion of China | Mongol invasion of Central Asia | mongol | Middle Mongol language | Jiangqiao Mongol Ethnic Town | In the Midst of Bloodied Soil |