The Communist League (German: Bund der Kommunisten) was an international political party established in June 1847 in London, England. The organisation was 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 were the dominant personalities. The Communist League is regarded as the first Marxist political party and it was on behalf of this group that Marx and Engels wrote the Communist Manifesto late in 1847. The Communist League was formally disbanded in 1852, following the Cologne Communist Trial.