The Roman Empire is the post-republican phase in the development of ancient Roman statehood, characterized by an autocratic form of government and large territorial possessions in Europe and the Mediterranean. Rome was the only state in history that owned the entire coast of the Mediterranean. The chronological framework of the existence of the Roman Empire covers the period from the reign of the first emperor Octavian Augustus to the division of the empire into Western and Eastern and the subsequent fall of the Western Roman empire, that is, from 27 BC on to 476. The eastern part of the Roman Empire with its center in Constantinople existed for another 977 years - until 1453.
Rome began as a group of villages along Italy's Tiber River.
About 750 B.C., the villages joined together to form a city
called Rome. It was ruled by kings for more than 200 years.
Eventually, Rome became a republic, and the people elected
representatives. These representatives formed the Senate,
Rome's most powerful body of government. Each year the
Senate elected two leaders who took charge of the
government and the military
In 27 B.C., Rome became an empire. Caesar's adopted son
Augustus became the first Roman emperor. He brought
peace and wealth to Rome for 40 years. Rome made great
progress. The army kept peace. Trade increased. Many public
buildings and lighthouses were built.