PACHACUTEC, THE MIGHTY EMPEROR.

Pachacutec was the 9th Sapa Inca of the Kingdom of Cuzco which he transformed into the Inca Empire (Tahuantinsuyo). In Quechua Pachacutec means "He who shakes the Earth."
During his reign, Cuzco grew from small Kingdom into an Empire. He began an era of conquest that, with 3 generations, expanded the Inca dominion of the High Lands of the Andes from the Valley of Cuzco to nearly the whole of Western South America.
As part of his vision of a statesman and warrior chieftain he conquered many ethnic groups and states, highlighting his conquest of the Collao that enhanced the prestige of the Inca Pachacutec. Due to the remarkable expansion of their domains he was considered an exceptional leader.
Numerous kurakas do not hesitate to recognize his skills and identify him as "Son of the Sun."
The kurakas were the head of the clans or family units that held religious authority. They mediated between the supernatural sphere and the mortal realm. They were responsible for making sure the spirit world blessed the mortal one with prosperity, and were held accountable should disaster strike, such as drought. They descended from the previous generation and his authority was granted by the Inca.
Pachacutec reorganized the Kindom of Cuzco into an Empire. He sent spies to Regions he wanted in the Empire who reported back on their religious and political organization, military might and wealth. He then sent messages to the leaders of these lands extolling the benefits of joining the Empire, offering them presents of luxury goods and promising riches as subjects rulers of the Inca. Most accepted the rule of the Inca peacefully. The ruler's children were brought to Cuzco to be taught about Inca religious and administration systems, then return to rule their native lands. This allowed the Inca to teach the former ruler's children into the inca nobility, and later marry their daughters into families at various corners of the Empire.
It was traditional for the Inca's son to lead the army. Pachacutec's son Tupac Inca Yupanqui began conquests to the North and continue them as Inca after Pachacutec's death. His most important conquest was the Kindom of Chimor, the Inca's only serious rival for the Coast of Peru.
Tupac Inca Yupanqui's son Huana Capac, grandson of Pachacutec, added significant territory to the South. At its height, Tahuantinsuyo included Peru, Bolivia, most of Ecuador, a large portion of Chile, and extended into corners of Argentina and Colombia.
Tahuantinsuyo was a patchwork of languages, cultures and peoples. Economic productivity was based on collective labor which was organized in order to benefit the whole community.