Why might aqueducts have been important to Rome's economic growth

Aqueducts were the reason Romans could achieves stable water supply for their crops.

Explanation:

The aqueducts were the first expansive irrigation system in the world at the time they were made and were the backbone of the extensive agricultural system that was made possible because of the steady water supply.

This system made possible for the Romans to grow multiple crops a year in the region and support populations more and have greater levels of prosperity.

This is also the reason that Rome's population skyrocketed due to availability of water to drink.