The Roman Empire created the world's first

A) irrigation system

B) network of roads

C) system of writing

D) firefighting biragades.

The correct answer is D) firefighting brigades. It was under the reign of Roman Emperor Augustus that the first fire brigade was organized. It was known as the vigils and its members were ex-slaves who had been trained in firefighting. They were very much appreciated and admired by common Romans. Eventually, firefighting brigades would be created in most cities of the Roman Empire.