In 1528, Pizarro traveled to Spain to win the king's blessing for the final expedition. He brought with him several American Indians from Peru, woven cloth, and most importantly, gold and silver. Pizarro was appointed captain-general in the Spanish government and given a salary and funds for his expedition. By 1530, he was ready and set out with 160 men (including twelve of his original "Glorious 13") to conquer the Incas. Pizarro's conquest of the Inca Empire was made easier by which of these factors?
A. the massive army he had brought to Peru
B. a smallpox epidemic that had devastated the Inca
C. the relatively small size of the Inca Empire
D. the language barrier between the Spanish and Inca