What did Augustus use arches to build?

aqueducts

Explanation:

Augustus use arches to build aqueducts because as roman aquifer is a channel used to transport fresh water to more populated areas. Aqueducts are, for some time, the most spectacular achievements of engineering. Previous Egyptian and Indian civilizations also built aquifers, And the arches were made of stone, concrete, brick and wood, and a mixture of concrete limestone and volcanic sand, which made it strong and durable. The ancient Romans built a curve that could support a large amount of weight, and as a result, the Romans were able to build large-scale structures such as aquatics.