Inca Empire Expansion under Pachacuti

Name: Inca Empire Expansion under Pachacuti
Start: 1435
End: 1440

Type Event Region South America Time 1435–1440

From the 1430s, Pachacuti Inca Yupanqui seized power in Cusco after defeating the Chanka invasion and launched a series of conquests that transformed…

Timeline

1438Cusco · CuscoThe Chanka confederation reached the gates of Cusco and Viracocha Inca was about to abandon the city. His son Pachacuti led a counterattack and victory, then deposed his father and declared himself Inca, becoming the direct trigger for imperial expansion.
1439–1440Urubamba Valley · Cusco RegionPachacuti led armies to conquer the Urubamba Valley and peoples around Cusco, incorporating local leaders into the imperial nobility and beginning construction of imperial roads and landmark projects such as the Temple of the Sun.

Sources

The Incas — Terence N. D'Altroy (2002)
Royal Commentaries of the Incas — Garcilaso de la Vega (1609)