Why did gold and silver not play the role of money anywhere in Indian America? In which state of ancient Europe were similar orders?

Even the Aztecs did not have a real commodity economy – the exchange of some objects for others prevailed and there was no need to single out one of them as a universal equivalent. This is reminiscent of ancient Sparta.

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.