The colors of the cords, the way the cords are connected together, the relative placement of the cords, the spaces between the cords, the types of knots on the individual cords, and the relative placement of the knots are all part of the logical-numerical recording.
For example, a yellow strand might represent gold or maize; or on a population quipu the first set of strands represented men, the second set women, and the third set children. Weapons such as spears, arrows, or bows were similarly designated.
The beginning of the Inca rule started with the conquest of the Moche Culture in Peru. The Inca were warriors with a strong and powerful army. Because of the fierceness of their army and their hierarchical organization, they became the largest Native American society .
Their cities and fortresses were mostly built on highlands and on the steep slopes of the Andes Mountains. The architecture of the Inca cities still amazes and puzzles most scientists. Stone steps lead up to the top of the cities, which consist of stone houses and religious buildings.