<P> Ancient Roman architecture adopted the external language of classical Greek architecture for the purposes of the ancient Romans , but differed from Greek buildings , becoming a new architectural style . The two styles are often considered one body of classical architecture . Roman architecture flourished in the Roman Republic and even more so under the Empire , when the great majority of surviving buildings were constructed . It used new materials , particularly concrete , and newer technologies such as the arch and the dome to make buildings that were typically strong and well - engineered . Large numbers remain in some form across the empire , sometimes complete and still in use . </P>
roman architecture is based on what kind of structure
the external language of classical Greek architecture