On February 21, 1848, The Communist Manifesto, written by Karl Marx with the assistance of Friedrich Engels, is published in London by a group of German-born revolutionary socialists known as the Communist League.
The political pamphlet--arguably the most influential in history--proclaimed that "the history of all hitherto existing society is the history of class struggles" and that the inevitable victory of the proletariat, or working class, would put an end to class society forever.