Nazi eugenics refers to the social policies of eugenics in Nazi Germany, composed of various pseudoscientific ideas about genetics. The racial ideology of Nazism placed the biological improvement of the German people by selective breeding of "Nordic" or "Aryan" traits at its center. These policies were used to justify the involuntary sterilization and mass-murder of those deemed "undesirable". Eugenics research in Germany before and during the Nazi period was similar to that in the United States (particularly California), by which it had been heavily inspired. However, its prominence rose sharply under Adolf Hitler's leadership when wealthy Nazi supporters started heavily investing in it. The programs were subsequently shaped to complement Nazi racial policies. Those targeted for murder under Nazi eugenics policies were largely people living in private and state-operated institutions, identified as "life unworthy of life" (). They included prisoners, degenerates, dissidents, and people with congenital cognitive and physical disabilities ()people who were considered to be feeble-minded. In fact being diagnosed with "feeblemindedness" (}) was the main label approved in forced sterilization, which included people who were diagnosed by a doctor as, or otherwise seemed to be: Epileptic Schizophrenic Manic-depressive (now known as bipolar) Cerebral palsy or muscular dystrophy Deaf and/or blind Homosexual or "transvestites" (which at the time was used to refer to intersex and transgender people, particularly trans women) Anyone else considered to be idle, insane, and/or weak as per "feeblemindedness" All of these were targeted for elimination from the chain of heredity. More than 400,000 people were sterilized against their will, while up to 300,000 were murdered under the Aktion T4 euthanasia program. Thousands more also died from complications of the forced surgeries, the majority being women from forced tubal ligations. In June 1935, Hitler and his cabinet made a list of seven new decrees, in which number 5 was to speed up the investigations of sterilization. In German, the concept of "eugenics" was mostly known under the term of Rassenhygiene or "racial hygiene". The loanword Eugenik was in occasional use, as was its closer loan-translation of Erbpflege. An alternative term was Volksaufartung (approximately "racial improvement"). Relationship with the U.S. eugenics movement The early German eugenics movement was led by Wilhelm Schallmayer and Alfred Ploetz. Henry Friedlander wrote that although the German and American eugenics movements were similar, the German movement was more centralized and did not contain as many diverse ideas as the American movement. Unlike