The Inca Empire extended along the Andes mountains from modern Ecuador to central Chile, with its capital at Cuzco, Peru. The Incas developed an extensive road system and advanced practices in agriculture, engineering, and medicine. However, in 1532 the Spanish conquistador Francisco Pizarro arrived with 160 men and took the Inca emperor Atahualpa hostage. Despite receiving a ransom of gold and treasures, Pizarro had Atahualpa killed the following year. The Spanish conquest and a plague led to the fall of the Inca Empire by 1535.