Pizarro was no longer the ruthless soldier of the days of Pedrarias. With great responsibilities and a great position he rose to the occasion. His proceedings were statesmanlike; his efforts to govern wisely the country entrusted to him were able and judicious. In the question which arose when the Spanish king resolved to divide the vast conquered area between Almagro and himself, he was in the right throughout. Almagro, with a number of captains anxious for opportunities to enrich themselves, had set out on an expedition to Chile. Before starting Almagro took a solemn oath on the Sacrament that he would maintain his friendship for Pizarro and never injure him or his interests. Meanwhile there was a great native rising. Pizarro himself was besieged in Lima, while his three brothers held Cuzco against a great army led by the Inca Manco. Pizarro received aid from Mexico and Santo Domingo. The siege of Lima was raised, and Pizarro sent a force under Alonso de Alvarado to help his brothers at Cuzco, of whom he had received no news. It was at this time that the royal order arrived for the division. The northern part of the conquered empire was to be called New Castille, and to be governed by Pizarro. The southern half, to be called New Toledo, was to be Almagro's government. The boundary between them was to be fixed by a royal arbitrator, not of course by one of the parties concerned. The rules for the guidance of the arbitrator were clear and precise. A certain position on the coast north of the equator was to be fixed by observations for the latitude. A direct line was then to be taken on a meridian due south for a given number of leagues; at the end of that line there were to be other latitude observations, and from the point thus fixed the line west to east was to be the boundary. Mr. Prescott says that there was ambiguity in the document, that it was not clear whether the line was to be along the coast or on a meridian, and he appears to think there were, therefore, excuses for Almagro's conduct; but there was no ambiguity. The instructions were quite clear, and it is distinctly stated that the line was to be on a meridian.[4] Mr. Prescott could not have seen the original document, which is given in full by Cieza de León. Besides, this begs the question. The point is that the boundary was to be decided by a special arbitrator, not by Almagro.