 He also strengthened the navy and the artillery and gave a great impulse to mining in the district of Chucuito, thereby increasing the revenue of the government of the colony.In 1617 he divided the government of Río de la Plata into two, Buenos Aires and Paraguay, both dependencies of the Viceroyalty of Peru.He was a supporter of the Jesuits, and collaborated with them in the suppression of idolatry and witchcraft.