founded by Greeks. Monarchy and republic After the foundation by Romulus according to a legend, Rome 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 Lucius Tarquinius Superbus. In 509 BC, the Romans expelled the last king from their city and established an oligarchic republic. Rome then began a period characterised by internal struggles between patricians (aristocrats) and plebeians (small landowners), and by constant warfare against the populations of central Italy: Etruscans, Latins, Volsci, Aequi, and Marsi. After becoming master of Latium, Rome led several wars (against the Gauls, Osci-Samnites and the Greek colony of Taranto, allied with Pyrrhus, king of Epirus) whose result was the conquest of the Italian peninsula, from the central area up to Magna Graecia. The third and second century BC saw the establishment of Roman hegemony over the Mediterranean and the Balkans, through the three Punic Wars (264–146 BC) fought against the city of Carthage and the three Macedonian Wars (212–168 BC) against Macedonia. The first Roman provinces were established at this time: Sicily, Sardinia and Corsica, Hispania, Macedonia, Achaea and Africa. From the beginning of the 2nd century BC, power was contested between two groups of aristocrats: the optimates, representing the conservative part of the Senate, and the populares, which relied on the help of the plebs (urban lower class) to gain power. In the same period, the bankruptcy of the small farmers and the establishment of large slave estates caused large-scale migration to the city. The continuous warfare led to the establishment of a professional army, which turned out to be more loyal to its generals than to the republic. Because of this, in the second half of the second century and during the first century BC there were conflicts both abroad and internally: after the failed attempt of social reform of the populares Tiberius and Gaius Gracchus, and the war against Jugurtha, there was a civil war from which the general Sulla emerged victorious. A major slave revolt under Spartacus followed, and then the establishment of the first Triumvirate with Caesar, Pompey and Crassus. The conquest of Gaul made Caesar immensely powerful and popular, which led to a second civil war against the Senate and Pompey. After his victory,