19th Century Political Thought

In a well-written essay of at least 400 words, discuss the questions raised by the shift from a largely agrarian society to an industrial one. The United States’ founders were proponents of Classical Liberal political thought. How did that philosophy, specifically its economic component, come under fire in the late 19th Century? Examine the major political theories including Classic Liberalism, Social Darwinism or Self Help, Reform Liberalism, and Marxism. Which do you think most successfully addressed the problems of modern (late 19th c and onward) society? You may discuss more than one.