Answer:
The social class structure of the Incas was divided in four: the Sapa Inca (the king), the royal family, the nobility and the commoners (ayllu). Along high nobles, low nobles or Hahua Incas were also in charge of administrating and organizing the empire. They were given these positions thanks to their skills in military and planning. Since they often excelled in their duties, they were granted privilege's by the Sapa, such as being liberated from paying taxes
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