Ancient Rome By pelorosso francisco 753 BCE Founding of Rome Period: 753 BCE to 510 BCE Monarchy Period: 753 BCE to 717 BCE the reign of Romulus Period: 715 BCE to 673 BCE The reign of Pompilius Period: 673 BCE to 642 BCE The reign of Hostilius Period: 642 BCE to 616 BCE The reign of Marcius Period: 616 BCE to 579 BCE The reign of Tarquinius Priscus Period: 578 BCE to 535 BCE The reign of Tullius Period: 535 BCE to 510 BCE The reign of Tarquinius Period: 510 BCE to 27 BCE Republic 509 BCE disestablished of Monarchy 390 BCE battle of Allia Period: 27 BCE to 770 Imperial Period: 27 BCE to 14 The reign of Octavian Period: 54 to 68 The reign of Nero They believe that Nero was one of cruelest emperor ever.