753 BCE: The legendary founding date of Rome.

750 BCE - 510 BCE: The (semi-mythological) seven kings of Rome: Romulus, Numa Pompilius, Tulus Hostilius, Ancus Marcius, Lucius Tarquinius Priscus, Servius Tullius, Lucius Tarquinius Superbus.

509 BCE: Foundation of the Roman Republic.

494 BCE: Traditional date the office of the tribuni plebis is created in Rome.

450 BCE: The number of Roman quaestors is increased to four and made open to plebians.

450 BCE: The laws of the 'Twelve Tables', the basis of Roman law, are compiled.

449 BCE: The Valerio-Horatian Laws establishes the tribal assemblies in Rome.

443 BCE: The position of censor is created in Rome.

440 BCE: Roman quaestors are chosen by the assembly rather than the consuls.

367 BCE: Law passed enabling Roman plebians to become consuls.

367 BCE: Position of aedile curule added for the patricians of Rome.

367 BCE: The Licino-Sextian rogations establish the office a third praetor; the original two are renamed consuls.

366 BCE: First Roman plebian consul named.

339 BCE: The leges Publilae decrees that one of Rome's two censors must be a plebeian.

287 BCE: The Lex Hotensia states that laws passed in Rome by the Concilium Plebis are binding to all people, even patricians.

180 BCE: The Lex Villia Annalis sets the minimum age of each magistracy in the Roman government.

131 BCE: Two plebeians hold the two positions of censor for the first time in Rome.

106 BCE: Roman statesman and orator Cicero is born.

100 BCE - 44 BCE: Life of Gaius Julius Caesar, founder of the Roman Empire.

81 BCE: Sulla significantly curbs the powers of the Roman tribuni plebis.

70 BCE: Pompey and Crassus are made consuls.

70 BCE: The powers of the tribuni plebis in Rome are reinstated.

65 BCE: Julius Caesar becomes aedile curule in Rome.

60 BCE - 53 BCE: 'First Triumvirate' between Caesar, Pompey and Crassus.

55 BCE: Marcus Licinius Crassus is made consul for the second time and departs on campaign in Parthia.

44 BCE: Caesar becomes dictator for life. On the 'Ides of March' (15th) he is killed by conspirators including Brutus and Cassius. Octavian, son of Caesars niece Atia, is posthumously adopted as his heir.

43 BCE - 36 BCE: Second Triumvirate: Antony, Octavian, and Lepidus (official approval by the Roman Senate). Mass proscriptions including Cicero.

43 BCE: Roman statesman and orator Cicero dies.

42 BCE: Octavian and Antony defeat Republicans under Brutus and Cassius at the Battle of Philippi (Greece).

27 BCE: Octavian is given extraordinary powers and the name Augustus by the Roman Senate.

23 BCE: Augustus takes over most of the powers of the tribuni plebis.

22 BCE: The last censor is elected in Rome.

68 CE - 69 CE: Year of the Four Emperors: Civil war in Rome.

212 CE: Roman citizenship granted to all inhabitants of the empire.

285 CE: The Roman empire is split into the Western and Eastern Roman empires.