Karl Marx and Frederick Engels were commissioned in late 1847 to draw up a manifesto by the Communist League, the first international working class organisation. The resulting pamphlet that calls on working class of all countries to unite has become an inspiration for socialists in every decade since.
It has been translated into more than a hundred languages. It is a historical materialist approach to history, a critique of capitalism and a guide to the international class struggle.
More than one and half centuries later the words of the preface to the 1872 German edition of the Manifesto remain applicable today: "However much the state of things may have altered during the last 25 years, the general principles laid down in the Manifesto are, on the whole, as correct today as ever."