Marx and Jenny move to Paris after their marriage, and Marx writes articles for the Deutsch-Französische Jahrbücher newspaper. He likes an article about political economy by Engels, who is impressed by Marx's article on the critique of Hegel and his ideas about the proletariat as a revolutionary force. After a disagreement with Ruge about his lack of revolutionary ideas, Marx meets and befriends Engels. Engels shows him his manuscript for "The Condition of the Working Class in England", and introduces Marx to socialism...