Karl Heinrich Marx was a German philosopher, sociologist, economic historian, journalist, and revolutionary socialist who developed the socio-political theory of Marxism. His ideas have since played a significant role in the development of social science and the socialist political movement. He published various books during his lifetime, with the most notable being The Communist Manifesto (1848) and Capital (1867-1894), many of which were co-written with his friend, the fellow German revolutionary socialist Friedrich Engels. Born into a wealthy middle class family in Trier, Prussia, Marx went on to study at both the University of Bonn and the University of Berlin, where he became interested in the philosophical ideas of the Young Hegelians.
