Define the social-Darwinism and how it differs from Darwinism

Read the attached FILES “Social Darwinism.PDF” file as well as other available sources and respond to the following questions: Define the Define the social-Darwinism and how it differs from Darwinism and how it differs from Darwinism. If social-Darwinism framed the XIX century Western mind on race relations, when do you think this type of pseudo theory ceased to exist? Or, do you think that we still socially reproduce this theory today? Provide well-supported evidence and logic.