During the Roman Republic, the island was the main source of grain for the city of Rome. Extraction was heavy, provoking armed uprisings known as the First and Second Servile Wars in the second century BC. In the first century, the Roman governor, Verres, was famously prosecuted for his corruption by Cicero. In the civil wars which brought the Roman Republic to an end, Sicily was controlled by Sextus Pompey in opposition to the Second Triumvirate. When the island finally came under the control of Augustus in 36 BC, it was substantially reorganised, with large Roman colonies being established in several major cities.