753-716 : 37 year reign of Romulus which includes the War with the Sabines. Romulus brought the Sabines and Romans under one ruler
716-673: Reign of Numa Pompilius. Numa Pompilius erected the temple of Janus in Rome. It was a time of peace and prosperity in the timeline of Ancient Rome
673-641: Reign of Tullus Hostilius which includes War with the Etruscans and the establishment of the Roman Patricians and Plebeians (Plebs)
641-616: Reign of Ancus Marcius and War with the Latins
616-578: Reign of Tarquinius Priscus which saw the increase of the plebs, the senate and the Vestal Virgins
578-534: Reign of Servius Tullius
534-509: Reign of Tarquinius Superbus (Tarquin the Proud, the last king of Rome) and War with the Volscians. Foundation of the temple on the Capitoline Hill. His despotic and tyrannical reign earned him the title superbus (meaning proud or haughty)
509: Rome replaced the Etruscan rulers with a Republic during the History of Rome. The revolt was led by Lucius Junius Brutus who became the founder of the Roman Republic and traditionally one of the first Consuls of Rome