Answer:
A significant number of Nazi persecutory policies stemmed from theories of racial hygiene, or eugenics. Such theories were prevalent among the international scientific community in the first decades of the twentieth century. The term “eugenics” (from the Greek for “good birth or stock”) was coined in 1883 by the English naturalist Sir Francis Galton. The term's German counterpart, “racial hygiene” (Rosenhagen), was first employed by German economist Alfred Ploetz in 1895. At the core of the movement’s belief system was the principle that human heredity was fixed and immutable.
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