Final answer:
The USA enacted forced sterilization programs based on eugenic principles, which subsequently influenced Nazi Germany's own eugenic policies designed to create a 'master race'. These policies included forced sterilizations and the annihilation of those deemed unfit.
Step-by-step explanation:
From Galton's eugenic framework, the USA implemented policies that aimed to improve the genetic makeup of its population. This began with state-funded forced sterilization programs and was followed by the pseudo-scientific support of eugenic ideas which promoted the concept of selective breeding to supposedly advance society. Such practices in the United States influenced Nazi Germany, with the Nazis modeling some of their eugenics policies, such as sterilization and eugenicide, on American practices of the early 20th century. The tragic culmination of these eugenic ideologies was seen in the horrific actions taken by the Nazis during the 1930s and 1940s to develop a 'master race.