Final answer:
Cortes noticed the presence of open markets, specialized streets for different goods, and officials ensuring the quality of products in the Aztec economy.
Step-by-step explanation:
Cortes noticed several aspects of the Aztec economy during his account. Firstly, he mentioned the existence of open squares where continuous markets were held for buying and selling various kinds of merchandise, including food, gold and silver ornaments, precious stones, textiles, and more. He also observed specialized streets where specific goods, such as herbs, vegetables, fruits, and cotton thread, were sold. Furthermore, Cortes noted the presence of officials who monitored the quality and accuracy of goods and measures sold in the market.
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