Question

Which political, economic, and social systems best related to the “American Dream”?

Answer 1

Democracy and capitalism is the answer.
Marxism is the belief that there should be no government, currency, and that property should be owned by the working class (to put it incredibly simply). It features equality and no capitalist manipulation by the upper class.
Socialism features government control over trade (in Marxism, "a dictatorship of the proletariat"), so no.
That leaves one choice. The American Dream is basically "get rich no matter the cost."

Answer 2

It would be democracy/capitalism i do think so