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.