what is the pax romana?
The 200 years that began with Augustus's rule is traditionally regarded as the "Pax Romana" ("Roman Peace").
Roman Empire
The 200 years that began with Augustus's rule is traditionally regarded as the "Pax Romana" ("Roman Peace"). 
when did the time of the roman empire begin 6th century BC what is the geographical area covered by this empire? Europe, North Africa, and the Middle East what was the common dialect used by the people at that time? Latin and Greek can you mentioned some major cities that developed during that time? Rome, Athens, Aphrodisias, Ephesus etc
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Roman Empire [SEP] The Pax Romana
The 200 years that began with Augustus's rule is traditionally regarded as the "Pax Romana" ("Roman Peace"). During this period, the cohesion of the empire was furthered by a degree of social stability and economic prosperity that Rome had never before experienced. Uprisings in the provinces were infrequent, but put down "mercilessly and swiftly" when they occurred. The success of Augustus in establishing principles of dynastic succession was limited by his outliving a number of talented potential heirs. The Julio-Claudian dynasty lasted for four more emperors—Tiberius, Caligula, Claudius and Nero—before it yielded in 69 AD to the strife-torn Year of Four Emperors, from which Vespasian emerged as victor.