2602149 Karl Heinrich Marx (1818 ? 1883); (add.info.: Karl Heinrich Marx 5 May 1818 ? 14 March 1883) was a German philosopher, economist, sociologist, historian, journalist, and revolutionary socialist. Marx\'s work in economics laid the basis for the current understanding of labour and its relation to capital, and has influenced much of subsequent economic thought.); Universal History Archive/UIG; out of copyright.