Marxist historiography is a school of historiography influenced by Marxism, the chief tenets of which are the centrality of social class and economic constraints in determining historical outcomes. Marxist historiography has made contributions to the history of the working class, oppressed nationalities, and the methodology of history from below. Friedrich Engels' most important historical contribution was "Der deutsche Bauernkrieg" about the German Peasants' War which analysed social warfare in early Protestant Germany in terms of emerging capitalist classes. "The German Peasants' War" indicate the Marxist interest in history from below and class analysis, and attempts a dialectical analysis.