The two dates that generally identify the beginning and the end of an entity state are only 27 BC, the first year of Octavian principality, with the awarding of the title of Augustus, and 395, when, at the death of Theodosius I, the empire is divided into a pars occidentalis and a orientalis.
The Western Roman Empire it terminates conventionally in 476, when Odoacer deposes the last legitimate emperor, Romolo Augusto. The Eastern Roman Empire Life will continue however until the time of the conquest of Constantinople by the Ottomans in 1453.
In its peak, the Empire stretched, in whole or in part on the territory of today’s states of Portugal, Spain, Andorra, France, Monaco, Belgium, Netherlands (southern regions), United Kingdom (England, Wales, Part Scotland), Ireland (small part of the east coast), Luxembourg, Germany (south and west), Switzerland, Austria, Liechtenstein, Hungary, Italy, Vatican, San Marino, Malta, Slovenia, Croatia, Bosnia and Herzegovina, Serbia, Montenegro, Kosovo, Albania, Macedonia, Greece, Bulgaria, Romania, Moldova, Ukraine (the south-western coast, overlooking Island of Snakes and Podolia), Turkey, Russia, Cyprus, Syria, Lebanon, Iraq, Armenia, Georgia, Iran, Azerbaijan Israel, Jordan, Palestine, Egypt, Sudan, (small end and for a limited period of time), Libya, Tunisia, Algeria, Morocco and Saudi Arabia (small portion).
While not the largest empire ever existed, and the Court this record first, largest in km², the British Empire and territorial continuity Mongolian Empire, that of Rome is considered the largest and quality management for the territory, social organization -Cancellation, and the important mark left in the history of mankind
In all the territories over which they extended their borders Romans built cities, roads, bridges, aqueducts, fortifications, exporting throughout their model of civilization and at the same time assimilating populations and civilizations subject, in such a profound process that for centuries even after the end of empire these people continued to call themselves Roman.
The civilization born on the banks of the Tiber, grew up and became widespread in the Republican era and finally fully developed in imperial times, is the basis of Western civilization.