For a long period the whole of South America was under the viceroyalty of Peru. Some of the larger capitals had bodies of officials known as Audiencias. The viceroyalty was divided into provinces, each of which had a governor. Each new region occupied was organized into a municipality, which was the real unit of their political structure. The governing body of this municipality was termed the Cabildo, and was composed of from six to twelve members who were appointed and held office for life. This body exercised the civil and judicial administration. Most of these men secured their appointment through actual purchase. The territorial jurisdiction of these municipalities was generally poorly defined, and it was sometimes almost coextensive with the province. Although the colonial governor was supposed to give a full account of his administration, he often failed to do so and conducted his office as a despotic and irresponsible ruler. The governors were always Spaniards, and only one exception appears in Argentina, Hernandarios Saavedra. This man appears as one of the brightest names during the seventeenth century. For several years he acted as governor of Buenos Aires, and he did a great deal of good in securing justice to the Indians and curbing the military power. He retained the confidence of both natives and Spaniards by his reputation for giving a square deal to all sides. Under his policy the colonies prospered and the pastoral pursuits were greatly extended. The sixteenth century contained very little of interest to the general reader. The inhabited portions were extended but little, and there were one or two uprisings of Indians against the white man’s rule. Only one was serious and that was of the tribes on the Andean slopes, who were stirred up by a leader who claimed to be the direct descendant of the old Inca princes. This disturbance lasted for fifty years, but it ended with the capture and execution of the leader, who was known to the Spaniards as Bohorquez. Some struggles took place between the Portuguese settlers of Brazil and the Spaniards, who had attempted to penetrate the regions watered by the upper Paraná. The “Paulistas,” inhabitants of the state of São Paulo, resisted the encroachments of the Spaniards, as they feared the Jesuit influences, which they both feared and hated. They raided the settlements of that order in Misiones and carried off several thousand of the poor natives as captives. The Iguassú River and the east bank of the Uruguay seemed to be adopted informally as the dividing line between the two races, although later differences arose over the territory now embraced in the republic of Uruguay. The Portuguese established a settlement, called Colonia, in 1680, almost opposite to Buenos Aires, which was ever a sore spot for the Spaniards and gave rise to much trouble. It became a harbouring place for smugglers and offenders against Spanish laws, but it remained under Portuguese control for a long period.