Justification for eugenics movements and imperialism

Define Social Darwinism and explain why it is not appropriate to use Darwin’s theory of evolution by natural selection as a justification for eugenics movements and imperialism (e.g. Nazi Germany). Why is it appropriate to explain human variation in skin color with Darwin’s theory of evolution by natural selection, and how is it different from the rationale of Social Darwinists? Describe, in detail, two or more incorrect assumptions of the social Darwinism concept. (Note, social Darwinism is a concept that lacks scientific support and is not equivalent to Charles Darwin’s theory of evolution). (look for info in Chapter 13, find the section on this topic-note there is a sample answer for a very similar question at the end of your text. DON’T copy it, but it is a good reference. You will need a MORE ELABORATE answer)