Roman Kingdom By francesca guerrieri 753 BCE the foundation of Rome Rome was found by Romulus and Remus 753 BCE start monarchy 510 BCE finish monarchy 509 BCE they start a new republic 509 BCE they established the republic 55 BCE start julio ceasar´s invasion of britian 54 BCE finished julio ceasa´s invasion of britians 29 BCE finished republic 28 BCE start empire 476 finish empire