In the twentieth century, the historical role of revolutions and socio-economic transformation increased; a role that, due to the emergence of new technologies and the capitalist relations, paved the way against the obsolete social relations of absolutism. Despite numerous studies, fundamental theoretical differences regarding the lineage -origin- and type -subject belonging- of revolutions persist. It includes definitions and concepts to the interpretation of the approach and consequences. Without genealogy and typology, revolutions are limiteded form of extensive transformations, without a framework, common characteristics and rules that cannot be studied as ordered unique phenomena. Besides, some of the revolutions have had transnational effects. In addition to domestic transformation, they have affected the global system and changed its configuration. Based on the findings, it is important not only to study the genealogical background and context, motivation, and constituent elements, but also the process and outcome of revolutions; it makes the epistemology and the outcome understandable. Assessing the credibility sheds light on the background and outcome of their occurrence as one of the most important stages in the historical evolution of nations, and also it provides a predictable system of movements formation. The research method is descriptive-analytical, based on the most prominent theories.