A civil war between Huascar and his brother led to this civilization's downfall.
This civilization's expansion was stopped at the Maule River by the Mapuche. This civilization's public works were powered by the mita labor system. The records of this civilization were kept through a base-ten system of cotton cords called quipu. A civil war between Huascar and his brother led to this civilization's downfall. At the Battle of Cajarmarca, Pizarro killed this civilization's ruler, Atahualpa. For 10 points, name this Quecha-speaking civilization based in Cuzco, which lived in the Andes and built Machu Picchu.
This civilization's expansion was stopped at the Maule River by the Mapuche.
{Inca} Civilization