End of 6th Century
- 509 - Fall of the Monarchy and establishment of the office of praetors, then consuls.
- 1st Treaty With Carthage
- Building of the Capitoline temple.
5th Century - 400s B.C.
- 496 - Battle of Lake Regillus against the Latin League c. 496-493.
- 494 - Secession of the Plebs Plebs Rights Timeline.
- 493 - Treaty between Spurius Cassius and the Latins.
- 492 - Coriolanus.
- 486 - lex agraria of Spurius Cassius.
- 482-474 - War with Veii.
- 479 - Battle of the Cremera.
- 477 - Destruction of the Fabian Gens in the Veientine Wars.
- 474 - Hiero of Syracuse defeats the Etruscans and Carthaginians.
- 471 - lex Publilia Voleronis (official recognition of the tribune of the Plebs).
- c. 469 - Number of tribunes raised to 10.
- 458 - War with the Aequians. Cincinnatus.
- 451-450 - Publication of the 12 Tables.
- 449 - Secession of the Plebs.
- 443 - Establishment of the office of Censor.
- 437-435 - 2nd Veientine War.