The Communist Manifesto Manifesto" summarises Marx and Engels' theories concerning 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 their ideas for how the capitalist society of the time would eventually be replaced by socialism. Near the end of the Manifesto, the authors call for "forcible overthrow of all existing social conditions", which served as the justification for all communist revolutions around the world. In 2013, "The Communist Manifesto" was registered to UNESCO's Memory of the World Programme with "Capital, Volume I". "The Communist
Ventotene Manifesto future wars. Vayssière notes that the manifesto is widely seen as the birth of European federalism. Spinelli (1907–86), a former Communist, became a leader of the federalist movement due to his primary authorship of the Manifesto and his postwar advocacy. The manifesto called for a break with Europe's past to form a new political system through a restructuring of politics and extensive social reform. It was presented not as an ideal, but as the best option for Europe's postwar condition. The most important assessment was the assertion that This statement was in contrast with the idea, then prevailing, that unity