Answer:
Social Darwinism is a belief that individuals, groups, and races are subject to the same laws of natural selection as plants and animals, and that the strong have the right to dominate the weak. The term "social Darwinism" was coined in the late 19th century, but the idea of applying Darwin's theory of evolution to human societies can be traced back to the work of Herbert Spencer, who argued that competition among individuals and groups was necessary for social progress. Social Darwinism was used to justify imperialism, racism, and eugenics, and played a role in shaping the policies of colonial powers and the attitudes of many people towards marginalized groups. While social Darwinism has been largely discredited, its influence can still be seen in some modern-day attitudes towards social issues such as inequality and welfare.