Question

Why did the Aztecs of Tenochtitlán build chinampas?

Answer 1

Answer:

The Aztecs built Tenochtitlan on an island around 1325. Issues arose when the cities' constant expansion eventually caused them to run out of room to build. As the empire grew, more sources of food were required. At times this meant conquering more land; at other times it meant expanding the chinampa system.

Explanation:

Answer 2

Answer:

This way, the city of Mexico‐Tenochtitlan became a 'floating' city. The Aztecs built the Chinampas for agricultural production, piling up mud from the bottom of the lake, rich in organic matter and nutrients and protecting it with a fence of wooden stakes.