Friedrich Engels, a German revolutionary political economist, worked with fellow German revolutionary, Karl Marx, from 1842 to 1883. Together, the two defined communism. Engels and Marx completed their famous treatise on the collapse of capitalism and rise of communism, The Communist Manifesto, in 1848, and in 1870 helped found the First International, an international Socialist organization. Engels wrote many of his own treatises on socialism and is also known for editing and publishing the second and third volumes of Das Kapital following the death of Marx in 1883.

(Microsoft Encarta Encyclopedia 2002)

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