‘Revolutionary’ explores Engels' relationship with Marx and the role of their partnership in the 1848 revolutions and the development of communism. Although Marx was far more intellectually developed than Engels, he lacked Engels' journalistic experience and reputation, and had few publications to his name. By this point, Engels had moved on from philosophy and liberalism to socialism and economics, opening the door to collaboration. He worked with Marx to help write publications, although the main intellectual input came from Marx. Engels' material smoothed the way for Marx to publish the Communist Manifesto. Engels then set out to coordinate European socialism and publicize the cause.