How Did the Inc Emerge in Cuzco An?

The inca emerge in cuzco an, which the highland area about cuzco itself is three thousand, 400 metrs above sea level. They consolidated a small number of ethnic groups around there as an alliance and then they began to expand out. In some cases they had real minof warfare and battles, and they had an army that they could bring together. Theinco use the decimal system. And it's not quite clear how that o imaliation related to these ethnic groups but there was this or of administrative control.