Friedrich Engels was one of the revolutionary thinkers of the 19th century whose work and life had a tremendous impact on the development of philosophy, history, and human society as a whole. “The Origin of the Family, Private Property and the State” is one of his most important works. Engels became one of the founders of the materialist understanding of history, and he revealed a number of specific patterns of primitive communal society, ancient and feudal societies, the emergence of private property and classes within them, and the formation of the state. An important feature of his works is that Engels presented Marxism as a coherent worldview, showing its components and theoretical sources.