Eugenics is a pseudoscience that arose in the late 1800s and maintained popularity in the early 1900s. it was an attempt to "measure" attributes such as intelligence in a way that proved the superiority of some races over others. what event was an outcome of eugenic practice?

I'm not fully sure what answer Is wanted, Eugenics was promoted by multiple people and was based around a lot more than race (even going to sexuality, and mental disorders) Germans during the WW2 era focused on this quite a lot, trying to create a better species and race by removing what they considered inferior. Sadly their are still some signs of eugenics in modern day