The first congress of the Communist League…
June 1847 CE
The first congress of the Communist League is held in London on June 1, 1847.
The organization has been formed through the merger of the League of the Just, headed by Karl Schapper, and the Communist Correspondence Committee of Brussels, Belgium, in which Karl Marx and Friedrich Engels are the dominant personalities.
The Communist League is regarded as the first Marxist political party and it is on behalf of this group that Marx and Engels write the Communist Manifesto late in 1847.