Overthrow of the Roman monarchy in the context of "Lucius Junius Brutus"

The Roman Republic (Latin: Res publica Romana [ˈreːs ˈpuːblɪka roːˈmaːna]) was the era of classical Roman civilisation beginning with the overthrow of the Roman Kingdom (traditionally dated to 509 BC) and ending in 27 BC with the establishment of the Roman Empire following the War of Actium. During this period, Rome's control expanded from the city's immediate surroundings to hegemony over the entire Mediterranean world.

Roman society at the time was primarily a cultural mix of Latin and Etruscan societies, as well as of Sabine, Oscan, and Greek cultural elements, which is especially visible in the ancient Roman religion and its pantheon. Its political organisation developed at around the same time as direct democracy in ancient Greece, with collective and annual magistracies, overseen by a senate. There were annual elections, but the republican system was an elective oligarchy, not a democracy, with a number of powerful families largely monopolising the senior magistracies. Roman institutions underwent considerable changes throughout the Republic to adapt to difficulties such as the creation of promagistracies to rule its conquered provinces and, after the Social War during the late Republic, the inclusion of peninsular Italians as citizens and senators.

The Roman Kingdom, also known as the Roman monarchy and the regal period of ancient Rome, was the earliest period of Roman history, when the city and its territory were ruled by kings. According to tradition, the Roman Kingdom began with the city's founding c. 753 BC, with settlements around the Palatine Hill along the river Tiber in central Italy, and ended with the overthrow of the kings and the establishment of the Republic c. 509 BC.

Little is certain about the kingdom's history as no records and few inscriptions from the time of the kings have survived. The accounts of this period written during the Republic and the Empire are thought largely to be based on oral tradition.

The Varronian chronology is the commonly accepted chronology of early Roman history named after the Roman antiquarian Marcus Terentius Varro. It is from this chronology that the commonly used dates for the foundation of the city (753 BC), the overthrow of the monarchy (509 BC), the Decimvirates (451–450 BC), the Gallic sack of Rome (390 BC), and the first plebeian consul (366 BC) are derived. The chronology consists of an ordered list of magisterial colleges (eg pairs of consuls) which, in modern times, are regularly assigned to years BC.

The years given by the Varronian chronology prior to 300 BC should not be accepted as absolute dates. Years in the chronology are also demonstrably incorrect and it flows four years prior to actual events by 340 BC. Moreover, Roman historians and antiquarians (most especially Livy and Dionysius of Halicarnassus) also did not all use Varro's scheme. Because both the ordering and absolute position of Varronian years is not well established for this early period, the numeric years derived from it should be taken as "no more than numerical symbols for specific consular years".

The Roman expansion in Italy covers a series of conflicts in which Rome grew from being a small Italian city-state to be the ruler of the Italian region. Roman tradition attributes to the Roman kings the first war against the Sabines and the first conquests around the Alban Hills and down to the coast of Latium. The birth of the Roman Republic after the overthrow of the Etruscan monarch of Rome in 509 BC began a series of major wars between the Romans and the Etruscans. In 390 BC, Gauls from the north of Italy sacked Rome. In the second half of the 4th century BC Rome clashed repeatedly with the Samnites, a powerful tribal coalition of the Apennine region.

By the end of these wars, Rome had become the most powerful state in central Italy and began to expand to the north and to the south. The last threat to Roman hegemony came during the Pyrrhic War (280–275 BC) when Tarentum enlisted the aid of the Greek king Pyrrhus of Epirus to campaign in the North of Italy. Resistance in Etruria was finally crushed in 265–264 BC, the same year the First Punic War began and brought Roman forces outside of the peninsula for the first time. Starting from the First Punic War (264–241 BC) the territories subject to Roman rule also included Sicily (241 BC), Sardinia and Corsica (238 BC), islands transformed into provinces.

The History of Rome, perhaps originally titled Annales, and frequently referred to as Ab Urbe Condita (English: From the Founding of the City), is a monumental history of ancient Rome, written in Latin between 27 and 9 BC by the Roman historian Titus Livius, better known in English as "Livy". The work covers the period from the legends concerning the arrival of Aeneas and the refugees from the fall of Troy, to the city's founding in 753 BC, the expulsion of the Kings in 509 BC, and down to Livy's own time, during the reign of the emperor Augustus. The last event covered by Livy is the death of Drusus in 9 BC. 35 of 142 books, about a quarter of the work, are still extant. The surviving books deal with the events down to 293 BC (books 1–10), and from 219 to 166 BC (books 21–45).

Sextus Tarquinius was one of the sons of the last king of Rome, Lucius Tarquinius Superbus. In the original account of the Tarquin dynasty presented by Fabius Pictor, he is the second son, between Titus and Arruns. However, according to Livy and Dionysius of Halicarnassus, he was either the third or first son, respectively. According to Roman tradition, his rape of Lucretia was the precipitating event in the overthrow of the monarchy and the establishment of the Roman Republic.

According to Roman tradition, Lucretia (/luːˈkriːʃə/ loo-KREE-shə, Classical Latin: [ɫʊˈkreːtia]; died c.  510 BC), anglicized as Lucrece, was a noblewoman in ancient Rome. Sextus Tarquinius (Tarquin), the king's son, raped Lucretia, and her subsequent suicide precipitated a rebellion that overthrew the Roman monarchy and led to the transition of Roman government from a kingdom to a republic. After Tarquin raped Lucretia, flames of dissatisfaction were kindled over the tyrannical methods of Tarquin's father, Lucius Tarquinius Superbus, the last king of Rome. As a result, the prominent families instituted a republic, drove the extensive royal family of Tarquin from Rome, and successfully defended the republic against attempted Etruscan and Latin intervention.

There are no contemporary sources of Lucretia and Tarquin’s rape of her. Information regarding Lucretia, how and when Tarquin raped her, her suicide, and the consequence of this being the start of the Roman Republic come from the accounts of Roman historian Livy and Greco-Roman historian Dionysius of Halicarnassus approximately 500 years later. Secondary sources on the establishment of the republic reiterate the basic events of Lucretia's story, though accounts vary slightly between historians. The evidence points to the historical existence of a woman named Lucretia and an event that played a critical part in the downfall of the monarchy. However, specific details are debatable and vary depending on the writer. According to modern sources, Lucretia's narrative is considered a part of Roman mythohistory. Much like the rape of the Sabine women, Lucretia's story provides an explanation for historical change in Rome through a recounting of violence against women by men.