Among the Aztecs, the military aristocracy played the main role, as in Sparta and Assyria. The Incas had a bureaucratic monarchy, as in the Kingdom of Job in Egypt or in Han China. The reason for this similarity lies, apparently, in the fact that the natural conditions of Egypt, China and Peru made it difficult to trade with the surrounding countries, but made it easier for officials to control the exchange of goods within the country.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.