Abstract
This article presents advances in the investigation on the field of urban environmental history. The model of social assignation of natural resources is defined by urban boundaries giving as a result a marked spatial and demographic disparity. The application of the urban microanalysis method allows us to suggest that, thought the model of distribution was inequitable, it was functional in the way that several diverse nucleuses existed that performed different roles in a connective and interdependent way. This way, blocks with varied functions were identified that allowed different grades of appropriation of space. The distribution of resources allowed the coexistence of the inhabitants of the city divided both racially and socially, defining occupational and relationship systems.