Answer:
the use of artificial islands to grow lake-bed gardens
Step-by-step explanation:
Tenochtitlán, which means place of the cactus, was the capital of the Aztec empire. Located in the valley of Mexico, it emerged in 1325 and lasted until 1519, when it was destroyed by the Spaniards. In that Aztec city, the market attracted some 60,000 people every day. It was more populated than any European capital of the time and in the center was the emperor's palace surrounded by gardens. In the Main Temple they made human sacrifices to the gods because they believed that without them the world would end. Tenochtitlan was built on artificial islands in the middle of a large lake. The streets were mostly canals. They had floating crops on rafts.