Roman roads, together with Roman aqueducts and the vast standing Roman army, constituted the three most impressive features of the Roman Empire. In Britain, as in their other provinces, the Romans constructed a comprehensive network of paved trunk roads (i.e. surfaced highways) during their nearly four centuries of occupation (43 - 410 AD).
P: Emperor Justinian of the Byzantine empire was able to codify Roman law and therefore reduce legal confusion in the Byzantine empire. During his rule Emperor Justinian also attempted to recover Western territory, without much success.
Trajan's column, is a Roman triumphal column that commemorates Roman emperor Trajan's victory in the Dacian Wars. It is considered to be the masterpiece of Roman sculptural art. It was dedicated to Trajan by Hadrian. (isn't it gorgeous? I could live in Rome)
The Roman Empire made great advancements in transportation through the use of roads. These roads allowed for easier trade and effective travel between cities. Sources: http://en.wikipedia.org/wiki/Roman_roads