The Eighteenth Brumaire of Louis Napoleon (German: Der 18te Brumaire des Louis Napoleon) is an essay written by Karl Marx between December 1851 and March 1852, and originally published in 1852 in Die Revolution, a German monthly magazine. The essay discusses the French coup of 1851 in which Louis-Napoléon Bonaparte assumed dictatorial powers. It shows Marx in his form as a social and political historian, treating actual historical events from the viewpoint of his materialist conception of history. The title refers to the Coup of 18 Brumaire in which Napoleon Bonaparte seized power in revolutionary France (9 November 1799, or 18 Brumaire Year VIII in the French Republican Calendar), in order to contrast it with the coup of 1851. Along with Marx's contemporary writings on English politics and The Civil War in France, the Eighteenth Brumaire is a principal source for understanding Marx's theory of the capitalist state.