The Incas used to have a large empire of 990,000 km2 in Peru, South America. Their cities were high up in the Andes Mountains. They were well-known for their great wealth, especially gold. This great empire was unfortunately destroyed in an attack by the Spaniards who were searching for their famed gold. Although this empire existed back in 1493, it was not a backward civilization, but complex and well-organized. The empire was ruled by the Sapa Inca, Lord of the World, Son of the Sun. He owned everything in the empire-the land, soil, gold and even the people. The people, therefore, had no freedom. Boys and girls were born to life of obedience and tradition. They began working in their ayllu or family groups. Their rule was ama sua, ama llulla, ama sheklla, which means, "Do not steal, do not lie, do not be lazy." Despite this difficult way of life, the Incas were very skillful. They constructed drainage systems and underground water reservoirs. Their buildings were made from huge stones. These were cut to fit perfectly so that no mortar was needed. Their rope bridges were so strong that even a horse could gallop across them! The Incas had no written language. Information was recorded on knotted strings called quipes. These were also used as calculators. Strong and healthy young boys were chosen as chasquis, or couriers, to carry messages from one place to another. 1. The text mainly tells about .... A. Chasquis B. The Incas C. Sapa Inca D. The Spaniards E. TheAndes