The answer is:
3. <span>they include a bibliography and citations to credit the sources
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Social Darwinism and American Laissez-faire Capitalism British philosopher Herbert Spencer went a step beyond Darwin's theory of evolution and applied it to the development of human society. In the late 1800s, many Americans enthusiastically embraced Spencer's "Social Darwinism" to justify laissez-faire, or unrestricted, capitalism.
Explanation:
Cotton Plantations I think
B. The English Channel helped protect the island nation of Britain from invasion.
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