 The book introduced a number of new ideas in the field of human geography and social organization models , that had been developed in the western world during the 18th century . Among the sources that the authors used to compose Geographia Neoteriki , were the Géographie Moderne by Nicolle de La Croix , the Géographie Ancienne , and the Géographie Moderne , which were part of the Encyclopédie <unk> by Charles @-@ Joseph <unk> . Additionally , the authors had personally examined the areas described in the work . This element served both as the work 's primary organizing mode as well as the basis for their historical approach . 
