The Inca Empire stretched over 5,500 kilometres ... So there was an internal civil war, if you want. And the empire went from Chile - from the North of Chile and Argentina, to the North of Ecuador.
Two of the (now dead) Emperor Huayna Capac's sons, Atahualpa and Huáscar, decided that a civil war over who should be Sapa Inca was perfect to do right now--nevermind the fact that Francisco ...