“…This is not always the case, however, and in some cases administrative systems are not well designed for political reasons or just because the rules or norms are unsuitable or they are designed on purpose (as is the case of Slovakia: see for example Buček, 2002Buček, , 2005or Romania: Suciu, 2002 Bunge, 1966;Johnston, 2002;Moore, 2002;Suciu, 2002;Apollonio et al, 2009 In theory, the definition of administrative regions should respect three basic principles with regard to a space: spatial efficiency, spatial equity, and spatial stability (Bezák, 1997, who builds upon the concepts put forward by Goodall, 1987;Michniak, 2003;Halás and Klapka, 2012;Klapka, et al, 2014). The principle of spatial efficiency states that the administrative geography of a territory should reflect the population distribution and its spatial behaviours (particularly spatial movements) to the greatest possible extent.…”