Final answer:
The Aztecs utilized causeways and roadways to connect Tenochtitlán to the surrounding areas, facilitating trade and transportation in their advanced civilization.
Step-by-step explanation:
The technological advancement the Aztecs used to make Tenochtitlán accessible to the surrounding regions was the creation of causeways and roadways. These structures were essential for transportation and trade, connecting the island city to the mainland and facilitating the movement of people, goods, and tribute.
The Aztecs employed a sophisticated system to support their densely populated capital, including the use of chinampas for agriculture which maximized food production to sustain their large population. Additionally, aqueducts brought in fresh water to the city, ensuring that the needs of its inhabitants were met, highlighting the engineering prowess of the Aztec civilization.