How did the aztecs grow their civilizations physically and economically

The Aztecs have many attributes, for instance they are poets, many pieces have been written by the Aztecs. They are also sculptors and artists as we can see their works of art in museums. Aztecs are scholars who teach many people within their GRAND empire.One famous attribute is their military strength, they are known to be the strongest army in all the eastern hemisphere. The Aztecs are certainly one of the most interesting empires in the world in my opinion.