

Subsequently, Pachacuti worked to expand the territory the Inca controlled, extending their influence beyond the Cuzco region. The invasion had driven his father to a military outpost. Pachacuti became emperor after he halted an invasion of Cuzco that was being carried out by a rival group called the Chancas. However, Inca oral history recorded by the Spanish, suggests that the expansion began in earnest during the reign of the emperor Pachacuti Inca Yupanqui, the son of Viracocha Inca, who reigned from 1438 to 1471. Viracocha began the practice of leaving behind military garrisons in lands to maintain the peace, according to.

The expansion of the Inca Empire began by the time the fourth emperor, Mayta Capac took hold, but didn't gain momentum until the reign of the eighth emperor, Viracocha Inca.

According to TK McEwan's book The Incas: New Perspectives” (ABC-CLIO, 2006), one of the main reasons why the Inca were able to expand was because the infrastructure was already in place - things like hydraulic systems and highways were left behind by the preceding empires. Legend has it that he first killed his brothers and then led his sisters into a valley near Cuzco, where they settled down around 1200 A.D., according to .Ĭuzco was located at a nexus point between two earlier empires, one called the Wari and another based at the city of Tiwanaku. In some mythical tales, the Inca was created by the sun god, Inti who sent his son, Manco Capac to Earth.
