 On 28 March 1797 the military engineer Juan de Pagazaurtundúa, who was stationed in the Interior Provinces, sent a letter to Lieutenant General Luis Huet entitled ""Sucinta Descripción de las Provincias Internas" (Succinct Description of the Internal Provinces) in which he described the Internal Provinces and their respective geographic features

Nava was the Captain general until 1804, when it was replaced by Pedro Grimarest and soon after by Nemesio Salcedo y Salcedo.On 30 May 1804 the King ordered a new headquarters division of East and West, but the order was not fulfilled.On 1 May 1811 the King again ordered the division of the general commandancy, but was delayed until Salcedo was replaced in 1813 by two commanding generals Simon Herrera and Leyva (replaced that year by Joaquín de Arredondo) on the east and Bernardo Bonavia y Zapata in the West.