Verified answer

Sigmund Freud was a Viennese psychoanalyst who stunned the European world when he published "The Interpretation of Dreams," in which he argued that the body controls the mind. He later argued that the mind was shaped more by events it did not remember(the unconscious) than by those it did. Karl Marx however, was a German economist whose ideas played a significant role in the development of social science and the socialist political movement. His best known work of literature was the Communist Manifesto which presents an analytical approach to the class struggle (historical and present) and the problems of capitalism, rather than a prediction of communism's potential future forms.The book contains Marxist theories about the nature of society and politics, that in their own words, "The history of all hitherto existing society is the history of class struggles". It also briefly features ideas for how the capitalist society of the time would eventually be replaced by socialism, and then eventually communism.

As for Mill I'm sorry I cannot help :/