Initially the Aztecs did farming for a living. There is no doubt that the Aztecs had a very developed economic system. Their economy advanced because they built irrigation canals and terraces in the mountains for maximum crop growing.
The Aztec used barter for trading due to the lack of a concept of the monetary system. However, this later developed into a stable monetary system. Although for a long time they had no money , they used salt, cocoa beans or cloth as currency. The idea of a monetary system was very well established and they were far advanced than other civilizations in their time when it came to transactions. Later they began trading using gold coins and copper knives. From this follows our modern currency.
The Aztecs were responsible for developing a formal government with the emperor at the head of the civilization. This allowed the distribution of the civilization into twenty clans as well as other government officials such as merchants, priests and nobles who were responsible for running the society in an orderly manner. They were also responsible for collecting tribute from neighbouring provinces which clearly helped the economy of Aztec.
The merchants although ranked below the nobles in terms of social class, ...