The Communist Manifesto the Prussian police. At their trial in Cologne 18 months later in late 1852 they were sentenced to 3–6 years' imprisonment. For Engels, the revolution was "forced into the background by the reaction that began with the defeat of the Paris workers in June 1848, and was finally excommunicated 'by law' in the conviction of the Cologne Communists in November 1852". After the defeat of the 1848 revolutions the "Manifesto" fell into obscurity, where it remained throughout the 1850s and 1860s. Hobsbawm says that by November 1850 the "Manifesto" "had become sufficiently scarce for Marx to think it worth reprinting
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