The geopolitician Anton Golopenţia formed as a sociologist in the German school has established himself as a key figure of the interwar Romanian geopolitical school. It has been noticed through the local monograph of a Bessarabian village, the sociological investigations carried out in the Romanian villages east of the Bug (1941-1943) and academic contributions on the Romanian geopolitics domain. A.Golopenţia is linking geopolitics and sociology; in foreign policy decision- making the following factors are essential: the economic element, population density, ethnic groups constituting the population and, ultimately, the country in question. Those elements are in an indissoluble unity, making sense of that state evolution.