The city became filled with triumphal arches commemorating great victories of generals and emperors, like the Triumphal Arches of Titus, Constantine, and Septimus. Thus, in contrast to ancient Greece, civic leaders as well as the gods were consecrated in images near every public dwelling.

Roman building materials were also different. Unlike the Greeks, Roman builders could not use marble all the time, because it had become expensive. But the Romans had developed concrete, in addition to their terracotta, stone and brick. Concrete was another example of a superior Roman technological reform. It was "made by mixing pazzolana, a strong volcanic material with rubble and a mixture of limes. The concrete was used to make walls, domes, vaulted roofs of solid concrete, concrete with brick ribs and faced structure" ("Roman Architecture," Romans Page, 2008).

The use of the arch, along with the development of new building materials enabled Romans to create...
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