The Incas established a mighty empire that stretched along the Pacific coast of South America. The early rulers defeated the other tribes of Cuzco. The early kings were called Sinchi. It was only from the rule of the sixth ruler, Inca Roca that they called themselves Inca. The eighth Inca. Huiracoch conquered most of Urubamba Valley, in the fifteenth century. During an attack on the enemy Chanka his son Pachacutec Yupanqui seized power. Pachacutec was called ‘he who remakes the world’. He recorded the history of his people.
His son Tupac Yupanqui was a patron of art and science. He led the empire to its golden age, and extended his rule as far as Chile and Ecuador. His son Huayana Capac conquered parts of Colombia.