| CHRONOLOGICAL TABLE |
| B. C 753 | Traditional Date of Foundation of Rome. |
| 578-535 | Servius Tullius. Division into thirty Tribes. Military Organization of Centuries. Institution of Census. |
| 509 | Office of Consuls instituted. |
| 494 | First Secession of Plebs. Institution of Tribuni Plebis. |
| 451-448 | Law of the Twelve Tables. |
| 449 | Second Secession of Plebs—Leges Valeriae Horatiae. |
| 445 | Lex Canuleia, legalizing marriages between Patricians and Plebeians. |
| 443 | Censorship established. |
| 366 | Office of Praetor established. |
| 326 | Lex Poetelia about this time. |
| 304 | Cnaeus Flavius publishes forms of actions and calendar of dies fasti and nefasti. |
| 300 | Lex Ogulnia, admitting Plebeians to College of Pontiffs. |
| 287 | Last Secession of Plebs— |
| | Lex Hortensia. |
| | Lex Aquilia. |
| 280 | Tiberius Coruncanius (subsequently first Plebeian Pontifex Maximus), Consul. |
| 242 | First appointment of a Praetor Peregrinus about this time. |
| 204 | Lex Cincia. |
| 198 | Sextus Aelius Paetus (earliest commentator on the Twelve Tables), Consul. |
| 170-150 | Lex Aebutia probably enacted within this period. |
| 169 | Lex Voconia. |
| 105 | P. Rutilius Rufus, Consul. |
| 95 | Q. Mucius Scaevola (pontifex), Consul. |
| 92 | Sulla, Dictator. |
| 89 | End of Social War. |
| | Leges Corneliae. |
| 66 | C. Aquilius Gallus, Praetor. |
| 63 | Cicero, Consul. |
| 59 | Julius Caesar, Consul. |
| 51 | Servius Sulpicius, Consul. |
| 49 | Accession of Julius Caesar to supreme power. |
| | Lex Rubria. |
| 45 | Lex Julia municipalis. |
| 44 | Assassination of Caesar. |
| 40 | Lex Falcidia. |
| 27 | Caesar Octavianus receives title of Augustus (first Constitution of the Principate). |
| 23 | Second and final Constitution of the Principate. |
| 27-14 | A D. Principate of Augustus. |
| | M. Antistius Labeo. |
| | C. Ateius Capito. |
| 18 | Lex Julia de adulteriis et de maritandis ordinibus. |
| A.D. | |
| 4 | Lex Aelia Sentia. |
| 6 | Lex Julia de vicesima hereditatium |
| 9 | Lex Papia Poppaea. |
| 14-37 | Tiberius, Emp. |
| | Masurius Sabinus. |
| | Proculus. |
| 19 | Date to which Lex Junia (Norbana) is generally ascribed. |
| 30 | C. Cassius Longinus, Consul. |
| 37-41 | Caligula, Emp. |
| 41-54 | Claudius, Emp.— |
| | Lex Claudia. |
| | S. C. Claudianum. |
| 46 | S. C. Vellaeanum or Velleianum. |
| 54-68 | Nero, Emp.— |
| | S. C. Neronianum. |
| 62 | S. C. Trebellianum. |
| 68 | Galba, Emp. |
| | Vitellius, Emp. |
| 68-79 | Vespasian, Emp. |
| 70 | S. C. Pegasianum. |
| 79-81 | Titus, Emp |
| 81-96 | Domitian, Emp. |
| 96-98 | Nerva, Emp. |
| 98-117 | Trajan, Emp. |
| 117-138 | Hadrian, Emp. |
| | Edictum Perpetuum of Salvius Julianus. |
| 138-161 | Antoninus Pius, Emp. |
| | First and part of second book of Gaius probably written at this time. |
| 161-180 | M. Aurelius Antoninus, Emp. |
| | Institutes of Gaius probably completed under this Emperor. |
| 178 | S. C. Orfitianum. |
| 180-193 | Commodus, Emp. |
| 193 | Pertinax and Julianus successively Emperors. |
| 193-211 | Septimius Severus, Emp. |
| 204 | Papinian, praefectus praetorio. |
| 211-217 | Caracalla, Emp — |
| | Papinian killed. |
| | Edict of Caracalla—extending citizenship. |
| 217-218 | Macrinus, Emp. |
| 218-222 | Elagabalus, Emp. |
| 222-235 | Severus Alexander, Emp. |
| 222 | Ulpian, praefectus praetorio. |
| 228 | Ulpian killed. |
| 235-238 | Maximinus, Emp. |
| 238 | Gordianus I and II, Emp. |
| 238-244 | Gordianus III, Emp. |
| 244-249 | Philippus, Emp. |
| 249-251 | Decius, Emp. |
| 251-253 | Trebonianus Gallus, Emp. |
| 253 | Aemilianus, Emp. |
| 253-260 | Valerian and Gallienus, joint Emperors. |
| 260-268 | Gallienus, sole Emperor. |
| 268-270 | Claudius II, Emp. |
| 270-275 | Aurelian, Emp. |
| 275-276 | Tacitus, Emp. |
| 276 | Florianus, Emp. |
| 276-282 | Probus, Emp. |
| 282-283 | Carus, Emp. |
| 283-284 | Carinus and Numerianus, joint Emperors. |
| 285 | Carinus, sole Emperor. |
| 285-286 | Diocletian, sole Emperor. |
| 286-305 | Diocletian and Maximian, joint Emperors |
| 305-306 | Constantius I and Galerius, joint Emperors. |
| 306 | Constantius I, Galerius, and Constantine the Great, joint Emperors. |
| 307-311 | Galerius, Constantine the Great, and Licinius, joint Emperors. |
| 311-323 | Constantine the Great and Licinius, joint Emperors. |
| 323-337 | Constantine the Great, sole Emperor. |
| 330 | Constantinople, the seat of government. |
| 337-340 | Constantius II, Constantine II, and Constans I, joint Emperors. |
| 340-350 | Constantius II and Constans I, joint Emperors. |
| 350-361 | Constantius II, sole Emperor. |
| 361-363 | Julian, Emperor. |
| 363-364 | Jovian, Emperor. |
| 364 | Valentinian I and Valens, joint Emperors. They divided the Empire into the Western and Eastern. |
| WESTERN EMPIRE. | |
| A. D. | | |
| 364-367 | Valentinian I, Emp. | |
| 367-375 | Valentinian I and Gratian, Emp. | |
| 375-383 | Gratian and Valentinian II, Emp. | |
| 383-392 | Valentinian II, sole Emperor. | |
| 392-395 | Theodosius I, Emperor of East and West. | |
| 395-423 | Honorius, Emp. | |
| 423-425 | Theodosius II, Emperor of East and West. | |
| 425-455 | Valentinian III, Emp. | |
| 426 | Law of Citations. | |
| 439 | Codex Theodosianus. | |
| 455 | Petronius Maximus, Emp. | |
| | Sack of Rome by the Vandals. | |
| 455-456 | Avitus, Emp. | |
| 457-461 | Majorian, Emp. | |
| 461-467 | Government practically in hands of the barbarian Ricimer. | |
| 467-472 | Anthemius, Emp. | |
| 472 | Olybrius, Emp. | |
| 472-475 | Julius Nepos, Emp. | |
| 475-476 | Romulus Augustulus, Emp. | |
| | End of Western Empire. | |
| 500 | Lex Romana Burgundionum. | |
| 506 | Lex Romana Visigothorum, or Breviarium Alarici, containing Epitome of Gaius. | |
| 511-515 | Edictum Theodorici (Lex Romana Ostrogothorum). | |
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