Through the analysis of archival material, mainly cartographic, this article explores the processes of territorial delimitation between the province of Yucatan and El Petén, as well as of the region then occupied by the British (present-day Belize). The elaboration of reports and maps for the establishment of limits and borders between provinces, and later between nation states, reflects the policies of those states regarding the establishment of their territories. In this context it studies the impact that the indigenous uprising known as the War of the Castes had on the process of establishing limits and borders.