Good Morning!
Graham Sumner is known for his tendencies to defend extreme freedom. Socialism prevents this perspective because it plans the economy. Manifest destiny prevents this perspective because it defends a kind of determinism and the Gospel of Wealth ends up falling into the same mistakes. Sumner would be closer to the idea of "Laissez-faire," since he is also known as a type of libertarian and would therefore defend the free market.
hugs!
