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In page Social Darwinism:

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While the term has been applied to the claim that Darwin's theory of evolution by natural selection can be used to understand the social endurance of a nation or country, social Darwinism commonly refers to ideas that predate Darwin's publication of On the Origin of Species. Others whose ideas are given the label include the 18th-century clergyman Thomas Malthus, and Darwin's cousin Francis Galton who founded eugenics towards the end of the 19th century.[citation needed]