After Huayna Capac died, his two sons Huascar and Atahualpa began to fight a civil war.
The five-year long civil war was devastating. Hundreds of thousands of people were killed. Many cities were attacked and the inhabitants slaughtered. Finally the army of Atahualpa captured Huascar and later executed him. When they finally reached Cuzco, many of his family and the nobility were killed.
Atahualpa declared himself the Sapa Inca and started to go south to Cuzco. But during this time word continued to come to Atahualpa about the approach of strange, bearded white people who wanted to meet with him. . .