Rome, a settlement around a ford on the river Tiber in central Italy conventionally founded in 753 BC, was ruled for a period of 244 years by a monarchical system, initially with sovereigns of Latin and Sabine origin, later by Etruscan kings. The tradition handed down seven kings: Romulus, Numa Pompilius, Tullus Hostilius, Ancus Marcius, Tarquinius Priscus, Servius Tullius and Tarquinius Superbus. In 509 BC, the Romans expelled the last king from their city, favouring a government of the Senate and the People (SPQR) and establishing an oligarchic republic.
The Italian Peninsula, named Italia, was consolidated into a single entity during the Roman expansion and conquest of new lands at the expense of the other Italic tribes, Etruscans, Celts, and Greeks. A permanent association with most of the local tribes and cities was formed, and Rome began the conquest of Western Europe, Northern Africa and the Middle East. In the wake of Julius Caesar's rise and death in the first century BC, Rome grew over the course of centuries into a massive empire stretching from Britain to the borders of Persia, and engulfing the whole Mediterranean basin, in which Greek and Roman and many other cultures merged into a unique civilisation. The long and triumphant reign of the first emperor, Augustus, began a golden age of peace and prosperity. Roman Italy remained the metropole of the empire, and as the homeland of the Romans and the territory of the capital, maintained a special status which made it Domina Provinciarum ("ruler of the provinces", the latter being all the remaining territories outside Italy).[74][75][76] More than two centuries of stability followed, during which Italy was referred to as the Rectrix Mundi ("governor of the world") and Omnium Terrarum Parens ("parent of all lands").[77]