Franz Oppenheimer (1926), Die soziologische Staatsidee. (Die Eroberung) [The Sociological Idea of the State (The Conquest)]

F. Oppenheimer's System der Soziologie is a multivolume publication that contains general sociology as common basis for all social sciences; theory of development; well specialized sociologies: the economy, law, state, etc. Oppenheimer conceived historically grounded universal science. Ibn Khaldun came into play in relationship with state theory. His approach directly built on Gumplowicz's “sociological theory”. An overview works shows was by no means starting point theorization state. We do not find any reference to him an earlier publication, Der Staat (1912), already contained full elaboration Nevertheless, his reception important: mobilized within framework scholarly debate ongoing amongst European sociologists at time, and whose key representative, Ludwig Gumplowicz, contributed significantly concerned period. In this context, did merely mention encyclopaedic endeavor present complete “precursors” sociology, but representative contributor theoretical which, believed, they both shared.