What is the background of pseudoscientific ideas of race on jewish nation during the period of 1933 to 1946​

From 1933 to 1945, Nazi Germany carried out a campaign to “cleanse” German society of individuals viewed as biological threats to the nation’s “health.” Enlisting the help of physicians and medically trained geneticists, psychiatrists, and anthropologists, the Nazis developed racial health policies that began with the mass sterilization of “genetically diseased” persons and ended with the near annihilation of European Jewry. With the patina of legitimacy provided by “racial” science experts, the Nazi regime carried out a program of approximately 400,000 forced sterilizations and over 275,000 euthanasia deaths that found its most radical manifestation in the death of millions of “racial” enemies in the Holocaust.

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