Territories of the Roman civilization from 510 BC to 480 AD:

  Roman Republic

  Roman Empire

  Western Roman Empire

  Eastern Roman/Byzantine Empire

Ancient Rome
This article is part of the series: Politics and government of Ancient Rome
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Ancient Rome was a thriving civilization that began growing on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to become one of the largest empires in the ancient world.^[1]

In its approximately twelve centuries of existence, Roman civilization shifted from a monarchy to an aristocratic republic to an increasingly autocratic empire. Through conquest and assimilation, it came to dominate Southern Europe, Western Europe, Asia Minor, North Africa and parts of Eastern Europe. Rome was preponderant throughout the Mediterranean region, and was one of the most powerful entities of the ancient world. It is often grouped into "Classical Antiquity" together with ancient Greece, and their similar cultures and societies are known as the Greco-Roman world.

The Romans are still remembered today, including such names as Julius Caesar, Cicero, and Horace. Ancient Roman society contributed greatly to government, politics, warfare, art, literature, architecture, technology, religion, and language in the Western world. A civilization highly developed for its time, Rome professionalized and greatly expanded its military and created a system of government called res publica, the inspiration for some modern republics^[2][3][4] such as the United States and France. It achieved impressive technological and architectural feats, such as the construction of an extensive system of aqueducts and roads, as well as large monuments, palaces, and public facilities.

By the end of the Republic, Rome had conquered the lands around the Mediterranean and beyond: its domain extended from the Atlantic to Judaea and from the mouth of the Rhine to North Africa. In the Empire, Rome entered in its golden times at the hands of Augustus Caesar. Under Trajan, the Empire reached its territorial peak. The republican values started to decline in the imperial times, and civil wars became the common ritual for a new emperor's rise.^[5][6][7]

Plagued by internal instability and attacked by various migrating peoples, the western part of the empire broke up into independent kingdoms in the 5th century. This splintering is a landmark historians use to divide the ancient period of universal history from the medieval era ("Dark Ages" of Europe). The Eastern Roman Empire survived this crisis and was governed from Constantinople after the division of the Empire. It comprised Greece, the Balkans, Asia Minor, Syria and Egypt. Despite the later loss of Syria and Egypt to the Arab-Islamic Empire, the Eastern Roman Empire continued for another millennium, until its remnants were finally annexed by the emerging Turkish Ottoman Empire. This eastern, Christian, medieval stage of the Empire is usually called the Byzantine Empire by historians.

History[link]

Roman chronology[link]

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Founding myth[link]

According to legend, Rome was founded in 753 BC by Romulus and Remus, who were raised by a she-wolf.

According to the founding myth of Rome, the city was founded on 21 April 753 BC by twin brothers Romulus and Remus, who descended from the Trojan prince Aeneas^[8] and who were grandsons of the Latin King, Numitor of Alba Longa. King Numitor was deposed from his throne by his brother, Amulius, while Numitor's daughter, Rhea Silvia, gave birth to the twins.^[9][10] Because Rhea Silvia was raped and impregnated by Mars, the Roman god of war, the twins were considered half-divine.

The new king feared Romulus and Remus would take back the throne, so he ordered them to be drowned.^[10] A she-wolf (or a shepherd's wife in some accounts) saved and raised them, and when they were old enough, they returned the throne of Alba Longa to Numitor.^[11][12]

The twins then founded their own city, but Romulus killed Remus in a quarrel over the location of the Roman Kingdom, though some sources state the quarrel was about who was going to rule or give his name to the city.^[13] Romulus became the source of the city's name.^[14] In order to attract people to the city, Rome became a sanctuary for the indigent, exiled, and unwanted. This caused a problem for Rome, which had a large workforce but was bereft of women. Romulus traveled to the neighboring towns and tribes and attempted to secure marriage rights but as Rome was so full of undesirables they all refused. Legend says that the Latins invited the Sabines to a festival and stole their unmarried maidens, leading to the integration of the Latins and the Sabines.^[15]

Another legend, recorded by Greek historian Dionysius of Halicarnassus, says that Prince Aeneas led a group of Trojans on a sea voyage to found a new Troy, since the original was destroyed in the outcome of the Trojan War. After a long time in rough seas, they landed at the banks of the Tiber River. Not long after they landed, the men wanted to take to the sea again, but the women who were traveling with them did not want to leave. One woman, named Roma, suggested that the women burn the ships out at sea to prevent them from leaving. At first, the men were angry with Roma, but they soon realized that they were in the ideal place to settle. They named the settlement after the woman who torched their ships.^[16]

The roman poet Vergil recounted this legend on his classical epic poem Aeneid. In the Aeneid, the Trojan prince Aeneas is destined by the gods in his enterprise of founding a new Troy. In the epic, the women also refused to go back to the sea, but they were not left on the Tiber. After reaching Italy, Aeneas, who wanted to marry Lavinia, was forced to wage war with her former suitor, Turnus. According to the poem, the Alban kings were descended from Aeneas, and thus, Romulus, the founder of Rome, was his descendant.

Kingdom[link]

The city of Rome grew from settlements around a ford on the river Tiber, a crossroads of traffic and trade.^[17] According to archaeological evidence, the village of Rome was probably founded sometime in the 8th century BC, though it may go back as far as the 10th century BC, by members of the Latin tribe of Italy, on the top of the Palatine Hill.^[18][19]

The Etruscans, who had previously settled to the north in Etruria, seem to have established political control in the region by the late 7th century BC, forming the aristocratic and monarchical elite. The Etruscans apparently lost power in the area by the late 6th century BC, and at this point, the original Latin and Sabine tribes reinvented their government by creating a republic, with much greater restraints on the ability of rulers to exercise power.^[20]

Roman tradition and archaeological evidence point to a complex within the Forum Romanum as the seat of power for the king and the beginnings of the religious center there as well. Numa Pompilius was the second king of Rome, succeeding Romulus. He began Rome's great building projects with his royal palace the Regia and the complex of the Vestal virgins.

Republic[link]

This bust from the Capitoline Museums is traditionally identified as a portrait of Lucius Junius Brutus.

According to tradition and later writers such as Livy, the Roman Republic was established around 509 BC,^[21] when the last of the seven kings of Rome, Tarquin the Proud, was deposed by Lucius Junius Brutus, and a system based on annually elected magistrates and various representative assemblies was established.^[22] A constitution set a series of checks and balances, and a separation of powers. The most important magistrates were the two consuls, who together exercised executive authority as imperium, or military command.^[23] The consuls had to work with the senate, which was initially an advisory council of the ranking nobility, or patricians, but grew in size and power.^[24]

Other magistracies in the Republic include tribunes, quaestors, aediles, praetors and censors.^[25] The magistracies were originally restricted to patricians, but were later opened to common people, or plebeians.^[26] Republican voting assemblies included the comitia centuriata (centuriate assembly), which voted on matters of war and peace and elected men to the most important offices, and the comitia tributa (tribal assembly), which elected less important offices.^[27]

In the 4th century BC Rome had come under attack by the Gauls. The Gauls until that time had only extended to the Po Valley in the Italian peninsula. The Gauls had been penetrating deep into Etruria, so the Romans decided to join in on the melee. With Etruria completely gone, the Gauls continued their advance south which led them into a fight with the Romans. On 16 July 390 BC, a Gallic army under the leadership of a tribal chieftain named Brennus, met the Romans on the Banks of the small Allia River just ten miles north of Rome. Brennus defeated the Romans, afterwards the Gauls marched directly to Rome. Most Romans had fled the city, those who were capable of fighting barricaded themselves upon the Capitoline Hill for a last stand. The Gauls looted and burned the city, then laid siege to the Capitoline Hill. The siege lasted seven months, the Gauls then agreed to a compromise peace. The Romans were forced to pay the Gauls 1,000 pounds of gold. According to legend, the Roman General supervising the weighing noticed that the Gauls were using false scales. The Romans then took up arms and drove the Gauls back, and then an army led by Camillus defeated the Gauls and he said, "With iron, not with gold, Rome buys her freedom."^[28]

The Romans gradually subdued the other peoples on the Italian peninsula, including the Etruscans.^[29] The last threat to Roman hegemony in Italy came when Tarentum, a major Greek colony, enlisted the aid of Pyrrhus of Epirus in 281 BC, but this effort failed as well.^[30][31] The Romans secured their conquests by founding Roman colonies in strategic areas, establishing stable control over the region of Italy.^[32]

Punic Wars[link]

In the 3rd century BC Rome had to face a new and formidable opponent: Carthage. Carthage was a rich, flourishing Phoenician city-state that intended to dominate the Mediterranean area. The two cities were allies in the times of Pyrrhus – who was a menace for both cities -, but with Rome's hegemony in mainland Italy and the Carthaginian thalassocracy, these cities were the two major powers in the Western Mediterranean – a signal of the imminent war.

The First Punic War war begun in 264 BC, when the city of Messana asked for Carthage's help in dealing with Hiero II of Syracuse. After the Carthaginian intercession, Messana asked Rome to expel the Carthaginians. Rome entered this war because Syracuse and Messana were too close of the newly conquered Greek cities of Southern Italy and Carthage was now able to make an offensive through Roman territory; along with this, Rome could extend its domain over Sicily.^[33]

Although the Romans had experience in land battles, to defeat this new enemy, naval battles were necessary. Carthage was a maritime power, and the Roman lack of ships and naval experience would make the path to the victory harsh for the Roman Republic. Despite this, after more than 20 years of war, Rome finally defeated Carthage and a peace treaty was signed. Among the reasons for the Second Punic War^[34] was the subsequent war reparations Carthage acquiesced to at the end of the First Punic War.^[35]

The Second Punic War is famous for its brilliant generals: on the Punic side Hannibal and Hasdrubal, and the Romans Marcellus, Fabius Maximus and Scipio Africanus. Rome faced this war simultaneously with the First Macedonian War.

The outbreak of the war was the audacious invasion of Italy led by Hannibal, son of Hamilcar Barca the Carthaginian general who was in charge of Sicily the First Punic War. Hannibal rapidly marched through Hispania and the Alps. This invasion caused panic in the cities and the only way to deflect Hannibal's intentions was to delay him in small battles. This strategy was led by Fabius Maximus, who would be nicknamed Cunctator ("delayer" in Latin), and until this day is called Fabian strategy. Due to this, Hannibal's goal was unachieved: he couldn't bring Italian cities to revolt against Rome and as his army diminished after every battle, he lacked machines and manpower to besiege Rome.

Hannibal's invasion lasted over 16 years, by ravaging the supplies of the Italian cities and fields. When the Romans perceived that his supplies were running out, they invaded the unprotected Carthage and forced Hannibal to go back to that city. On his return he faced Scipio, who had defeated his brother Hasdrubal. The result of this confrontation was the end of the Second Punic War in the famous Battle of Zama in October 202 BC, which gave to Scipio his agnomen Africanus. Rome's final debt was of many deaths, but also of resounding gains: the conquest of Hispania by Scipio and of Syracuse, the last Greek realm in Sicily, by Marcellus.

More than a half century after these events, Carthage was humiliated and Rome was no more concerned about the African menace. The Republic's focus now was only to the Hellenistic kingdoms of Greece and revolts in Hispania. However, Carthage after having paid the war indemnity, felt that its commitments and submission to Rome had ceased – a vision not shared by the Roman Senate. In 151 BC Numidia invaded Carthage, and after asking for Roman help, ambassadors were sent to Carthage, among them was Marcus Porcius Cato, who after seeing that Carthage could make a comeback and regain its importance, ended all his speeches, no matter what the subject was, by saying: "Ceterum censeo Carthaginem esse delendam" ("Furthermore, I think that Carthage must be destroyed").

As Carthage fought with Numidia without Roman consent, Rome declared war against Carthage in 149 BC. Carthage resisted well at the first strike, with the participation of all the inhabitants of the city. However, Carthage could not withstand the attack of Scipio Aemilianus, who entirely destroyed the city and its walls, enslaved and sold all the citizens and gained control of that region, which became the province of Africa and thus, ending the Punic War period.

All these wars resulted in Rome's first overseas conquests, of Sicily, Hispania and Africa and the rise of Rome as a significant imperial power.^[36][37]

Late Republic[link]

After defeating the Macedonian and Seleucid Empires in the 2nd century BC, the Romans became the dominant people of the Mediterranean Sea.^[38][39] The conquest of the Hellenistic kingdoms provoked a fusion between Roman and Greek cultures and the Roman elite, once rural, became a luxurious and cosmopolitan one. By this time Rome was a consolidated empire – in the military view – and had no major enemies.

Gaius Marius, a Roman general and politician who dramatically reformed the Roman military

Foreign dominance led to internal strife. Senators became rich at the provinces' expense, but soldiers, who were mostly small-scale farmers, were away from home longer and could not maintain their land, and the increased reliance on foreign slaves and the growth of latifundia reduced the availability of paid work.^[40][41]

Income from war booty, mercantilism in the new provinces, and tax farming created new economic opportunities for the wealthy, forming a new class of merchants, the equestrians.^[42] The lex Claudia forbade members of the Senate from engaging in commerce, so while the equestrians could theoretically join the Senate, they were severely restricted in political power.^[17][43] The Senate squabbled perpetually, repeatedly blocking important land reforms and refusing to give the equestrian class a larger say in the government.

Violent gangs of the urban unemployed, controlled by rival Senators, intimidated the electorate through violence. The situation came to a head in the late 2nd century BC under the Gracchi brothers, a pair of tribunes who attempted to pass land reform legislation that would redistribute the major patrician landholdings among the plebeians. Both brothers were killed and the Senate passed reforms reversing the Gracchi brother's actions.^[44] This led to the growing divide of the plebeian groups (populares) and equestrian classes (optimates).

Marius and Sulla[link]

Gaius Marius, a novus homo, started his political career with the help of the powerful Metelli and soon become a leader of the Republic, holding the first of his seven consulships (a unprecedented experience) in 107 BC by arguing that his former patron Quintus Caecilius Metellus Numidicus was not able to defeat and capture the Numidian king Jugurtha. Marius then started his military reform: in his recruitment to fight Jugurtha, he levied very poor men (an innovation), and many landless men entered the army – this was the seed of securing loyalty of the army to the General in command.

At this time, Marius began his quarrel with Lucius Cornelius Sulla: Marius, who wanted to capture Jugurtha, asked Bocchus, son-in-law of Jugurtha, to hand him over to the Romans. As Marius failed, Sulla – a legate of Marius at that time – went himself to Bocchus in a dangerous enterprise and convinced Bocchus to hand Jugurtha over to him. This was very provocative to Marius, since many of his enemies were encouraging Sulla to oppose Marius. Despite this, Marius was elected for five consecutive consulships from 104–100 BC, because Rome needed a military leader to defeat the Cimbri and the Teutones, who were threatening Rome.

Lucius Cornelius Sulla

After Marius's retirement, Rome had a brief peace, which was broken due to the assassination of the reformist Marcus Livius Drusus, and this triggered the Social War. This war was caused when the Italian socii ("allies" in Latin) revolted against the Romans, as they were not entitled to Roman citizenship and voting rights. This brought Marius back to the military and political fore, because after the deaths of the consuls he was appointed to command the army together with Lucius Julius Caesar and Sulla.^[45]

By the ending of the Social War, the partisans of Marius and Sulla were in conflict, both sides jostling for power. In 88 BC, Sulla was elected for his first consulship and his first assignment was to defeat Mithridates of Pontus, whose intentions were to conquer the Eastern part of the Roman territories. However, Marius's partisans managed his installation to the military command, defying Sulla and the Senate, and this caused Sulla's wrath. To consolidate his own power, Sulla conducted a surprising and illegal action: he marched to Rome with his legions, killing all those who showed support to Marius's cause and impaling their heads in the Roman Forum. In the following year, 87 BC, Marius, who had fled at Sulla's march, came back to Rome while Sulla was campaigning in Greece. He seized power along with the consul Lucius Cornelius Cinna and killed the other consul, Gnaeus Octavius, achieving to his seventh consulship. In an attempt to raise Sulla's anger, Marius and Cinna revenged their partisans conducting a massacre^[45] (Marian Massacre) and having impaled the heads of Sulla's supporters (as earlier Publius Sulpicius Rufus was impaled similarly by Sulla on the rostra).^[46]

Marius died in 86 BC, due to his age and poor health, just a few months after seizing power. Cinna exercised absolute power until his death in 84 BC. Sulla after returning from his Eastern campaigns, had a free path to reestablish his own power. In 83 BC he made his second march in Rome and started a more sanguinary time of terror: thousands of nobles, knights and senators were executed. Sulla also held two dictatorships and one more consulship, which established the crisis and decline of Roman Republic.^[45]

Caesar and the First Triumvirate[link]

Bust of Caesar from the Naples National Archaeological Museum.

In the mid-1st century BC, the city of Rome was in a restless period. After Marius's fall, the populace was lacking populist leaders and the men who were enriched at Sulla's time, urged for a new absolute leader who would delegate power and opportunities to them. The latter group supported the Catilinarian conspiracy – a resounding failure, since the consul Marcus Tullius Cicero quickly arrested and executed the main leaders of the conspiracy.

At this time the strife between populares and optimates increased, and they each wanted a strong new man to lead the Roman Republic – with some internal oppositions to this in the optimates party, namely Cicero and Cato the Younger.

Into this turbulent scenario emerged the figure of the very popular politician, Gaius Julius Caesar. Caesar became the symbol of Ancient Rome, and his name became synonymous with glory, geniality, boldness, and power. Caesar, having a familial bond with Marius (his aunt Julia was Marius' wife),^[47] rebuilt the Marian party, which had been humiliated and drastically reduced after Sulla's terms in office, and was able to count upon its support. To achieve power, Caesar reconciled the two more powerful men in Rome: Marcus Licinius Crassus, his sponsor, and Crassus' rival, Gnaeus Pompeius Magnus (often anglicized as Pompey). This new alliance, the First Triumvirate ("three men"), had satisfied the interests of these three men: Crassus, the richest man in Rome, became richer; Pompey exerted more influence in the Senate; and Caesar held consulship and military command in Gaul.^[48]

In 53 BC, the Triumvirate disintegrated at Crassus' death. Crassus had acted as mediator between Caesar and Pompey, and, without him, the two generals began to fight for power. After being victorious in several battles in the Gallic Wars and earning respect and praise from the legions, Caesar was a clear menace to Pompey. Confident that Caesar could be stopped by legal means, Pompey tried to remove Caesar's legions. Caesar resisted because Pompey would gain absolute power. To avoid this, Caesar crossed the Rubicon River and invaded Rome in 49 BC.

Caesar pursued Pompey and destroyed all of the optimates leaders: Metellus Scipio, Cato the Younger, and Pompey's son, Gnaeus Pompeius. Pompey was murdered in Egypt in 48 BC, after his escape from Rome during the Battle of Pharsalus, which was a brilliant victory for Caesar. With his sole preeminence over Rome, in the years between the crossing of the Rubicon and his assassination, Caesar was granted many offices. Before a term had ended, Caesar was granted another one. In just five years, he held four consulships, two ordinary dictatorships, and two special dictatorships: one for ten years and another for perpetuity. He was murdered in 44 BC, in the Ides of March by the Liberatores.^[49]

Octavian and the Second Triumvirate[link]

The Battle of Actium, by Lorenzo Castro, painted 1672, National Maritime Museum, London

Caesar's assassination caused political and social turmoil in Rome; without the dictator's leadership, the city was ruled by his friend and colleague, Mark Antony. Soon afterward, Octavius, whom Caesar adopted through his will, arrived in Rome. Octavian (historians regard Octavius as Octavian due to the Roman naming conventions) tried to align himself with the Caesarian faction. In 43 BC, along with Antony and Marcus Aemilius Lepidus, Caesar's best friend,^[50] he legally established the Second Triumvirate. This alliance would last for five years. Upon its formation, 130–300 senators were executed, and their property was confiscated, due to their supposed support for the Liberatores.^[51]

In 42 BC, the Senate deified Caesar as Divus Iulius, (note that Divus means "deified", and not "god". The Latin word for god is Deus; this word is used for real deities as Jupiter and Apollo. However, a Divus is not a deity, but a remarkable person who was as important to Rome as Romulus was.) Octavian thus became Divi filius,^[52] the son of the deified. In the same year, Octavian and Antony defeated both Caesar's assassins and the leaders of the Liberatores, Marcus Junius Brutus and Gaius Cassius Longinus, in the Battle of Philippi.

The Second Triumvirate was marked by the proscriptions of many senators and equites: after a revolt led by Antony's brother Lucius Antonius more than 300 senators and equites involved were executed on the anniversary of the Ides of March, although Lucius was spared.^[53] The Triumvirate proscribed several important men, including Cicero, whom Antony hated;^[54] Quintus Tullius Cicero, the younger brother of the orator; and, more shockingly, Lucius Julius Caesar, cousin and friend of the acclaimed general, for his support of Cicero. However, Lucius was pardoned, perhaps because his sister Julia had intervened for him.^[55]

The Triumvirate divided the Empire among the triumvirs: Lepidus was left in charge of Africa, Antony, the eastern provinces, and Octavian remained in Italy and controlled Hispania and Gaul.

The Second Triumvirate expired in 38 BC but was renewed for more five years. However, the relationship between Octavian and Antony had deteriorated, and Lepidus was forced to retire in 36 BC after betraying Octavian in Sicily. By the end of the Triumvirate, Antony was living in Egypt, an independent and rich kingdom ruled by Antony's lover, Cleopatra VII. Antony's affair with Cleopatra was seen as an act of treason, since she was queen of another country and Antony was adopting an extravagant and Hellenistic lifestyle that was considered inappropriate for a Roman statesman.^[56]

Following Antony's Donations of Alexandria, which gave to Cleopatra the title of "Queen of Kings", and to Antony's and Cleopatra's children the regal titles to the newly conquered Eastern territories, the war between Octavian and Antony broke out. Octavian annihilated Egyptian forces in the Battle of Actium in 31 BC. Antony and Cleopatra committed suicide. Now Egypt was conquered by the Roman Empire, and for the Romans, a new era had begun.

Empire[link]

In 27 BC, Octavian was the sole Roman leader. His leadership brought the zenith of the Roman civilization, that lasted for two centuries. In that year, he took the name Augustus. That event is usually taken by historians as the beginning of Roman Empire – although Rome was an "imperial" state since 146 BC, when Carthage was razed by Scipio Aemilianus and Greece was conquered by Lucius Mummius. Officially, the government was republican, but Augustus assumed absolute powers.^[57][58] Besides that, the Empire was safer, happier and more glorious than the Roman Republic.^[58]

Julio-Claudian dynasty[link]

The Julio-Claudian dynasty was established by Augustus. The emperors of this dynasty were: Augustus, Tiberius, Caligula, Claudius and Nero. The dynasty is so-called due to the gens Julia, family of Augustus, and the gens Claudia, family of Tiberius. The Julio-Claudians started the destruction of republican values, but on the other hand, they boosted Rome's status as the central power in the world.^[59]

While Caligula and Nero are usually remembered as mad or mean emperors in popular culture, Augustus and Claudius were great emperors in politics and military. This dynasty instituted imperial tradition in Rome^[60] and frustrated any attempt to reestablish Republic.^[61]

Augustus[link]

Augustus gathered almost all the republican powers under his official title, princeps: he had powers of consul, princeps senatus, aedile, censor and tribune – including tribunician sacrosanctity.^[62] This was the base of an emperor's power. Augustus also styled himself as Imperator Gaius Julius Caesar divi filius, "Commander Gaius Julius Caesar, son of the deified one". With this title he not only boasted his familial link to deified Julius Caesar, but the use of Imperator signified a permanent link to the Roman tradition of victory.

He also diminished the Senatorial class influence in politics by boosting the equestrian class. The senators lost their right to rule certain provinces, like Egypt; since the governor of that province was directly nominated by the emperor. The creation of the Praetorian Guard and his reforms in military, setting the number of legions in 28, ensured his total control over the army.^[63]

Statue of Augustus, the first Roman emperor.

Compared with Second Triumvirate’s epoch, Augustus' reign as princeps was very peaceful. This peace and richness (that was granted by the agrarian province of Egypt)^[64] led people and nobles of Rome to support Augustus and increased his strength in political affairs.^[65]

In military activity, Augustus was absent at battles. His generals were responsible for the field command; gaining much respect from the populace and the legions, such as Marcus Vipsanius Agrippa, Nero Claudius Drusus and Germanicus. Augustus intended to extend the Roman Empire to the whole known world, and in his reign, Rome had conquered Cantabria Aquitania, Raetia, Dalmatia, Illyricum and Pannonia.^[66]

Under Augustus's reign, Roman literature grew steadily in the Golden Age of Latin Literature. Poets like Vergil, Horace, Ovid and Rufus developed a rich literature, and were close friends of Augustus. Along with Maecenas, he stimulated patriotic poems, as Vergil's epic Aeneid and also historiographical works, like those of Livy. The works of this literary age lasted through Roman times, and are classics.

Augustus also continued the shifts on the calendar promoted by Caesar, and the month of August is named after him.^[67] Augustus brought a peaceful and thriving era to Rome, that is known as Pax Augusta or Pax Romana. Augustus died in 14 AD, but the empire’s glory continued after his era.

From Tiberius to Nero[link]

Extent of the Roman Empire under Augustus. The yellow legend represents the extent of the Republic in 31 BC, the shades of green represent gradually conquered territories under the reign of Augustus, and pink areas on the map represent client states; however, areas under Roman control shown here were subject to change even during Augustus' reign, especially in Germania.

The Julio-Claudians continued to rule Rome after Augustus' death and they remained in power until the death of Nero in 68 AD.^[68] Augustus' favorites for succeeding him were already dead in his senescence: his nephew Marcellus died in 23 BC, his friend and military commander Agrippa in 12 BC and his grandson Gaius Caesar in 4 AD. Influenced by his wife, Livia Drusilla, Augustus appointed Tiberius, her son from another marriage, as his heir.^[69]

The Senate agreed with the succession, and granted to Tiberius the same titles and honors once granted to Augustus: the title of princeps and Pater patriae, and the Civic Crown. However, Tiberius was not an enthusiast of political affairs: after agreement with the Senate, he retired to Capri in 26 AD,^[70] and left control of the city of Rome in the hands of the praetorian prefect Sejanus (until 31 AD) and Macro (from 31 to 37 AD). Tiberius was regarded as an evil and melancholic man, who may have ordered the murder of his relatives, the popular general Germanicus in 19 AD,^[71] and his own son Drusus Julius Caesar in 23 AD.^[71]

Tiberius died (or was killed)^[71] in 37 BC. The male line of the Julio-Claudians was limited to Tiberius' nephew Claudius, his grandson Tiberius Gemellus and his grand-nephew Caligula. As Gemellus was still a child, Caligula was chosen to rule the Empire. Being a popular leader in the first half of his reign, Caligula became a crude and insane tyrant in his years controlling government.^[72][73] Suetonius states that he committed incest with his sisters, killed some men just for amusement and nominated a horse for a consulship.^[74]

The Praetorian Guard murdered Caligula four years after the death of Tiberius,^[75] and, with belated support from the senators, proclaimed his uncle Claudius as the new emperor.^[76] Claudius was not as authoritarian as Tiberius and Caligula. Claudius conquered Lycia and Thrace; his most important deed was the beginning of the conquest of Britain.^[77]

Claudius was poisoned by his wife, Agrippina the Younger in 54 AD.^[78] His heir was Nero, son of Agrippina and her former husband, since Claudius' son, Britannicus, had not reached manhood upon his father's death. Nero is widely known as the first persecutor of Christians and for the Great Fire of Rome, started by the emperor himself.^[79][80] Nero faced many revolts during his reign, like the Pisonian conspiracy and the First Jewish-Roman War. Although Nero defeated these rebels, he could not overthrow the revolt led by Servius Sulpicius Galba. The Senate soon declared Nero a public enemy, and he committed suicide.^[81]

Flavian dynasty[link]

The Flavians were the second dynasty to rule Rome.^[82] In 68 AD, year of Nero's death, there was no chance of return to the old and traditional Roman Republic, thus a new emperor had to rise. After the turmoil in the Year of the Four Emperors, Titus Flavius Vespasianus (anglicized as Vespasian) took control of the Empire and established a new dynasty. Under the Flavians, Rome continued its expansion, and the state remained secure.^[83][84]

Vespasian[link]

Vespasian was a great general under Claudius and Nero. He fought as a commander in the First Jewish-Roman War along with his son Titus. Following the turmoil of the Year of the Four Emperors – In 69 AD, four emperors were enthroned: Galba, Otho, Vitellius and finally, Vespasian -, he crushed Vitellius' forces and became emperor.^[85]

Bust of Vespasian, founder of the Flavian dynasty

He reconstructed many buildings which were uncompleted, like a statue of Apollo and the temple of Divus Claudius ("the deified Claudius"), both initiated by Nero. Buildings once destroyed by the Great Fire of Rome were rebuilt, and he revitalized the Capitol. Vespasian also started the construction of the Flavian Amphitheater, more commonly known as the Colosseum.^[86]

The historians Josephus and Pliny the Elder wrote their works during Vespasian's reign. Vespasian was Josephus' sponsor and Pliny dedicated his Naturalis Historia to Titus, son of Vespasian.

Vespasian sent legions to defend the eastern frontier in Cappadocia, extended the occupation in Britain and renewed the tax system and died in 79 AD.

Titus and Domitian[link]

Titus had a short-lived rule; he was emperor from 79–81 AD. He finished the Flavian Amphitheater, which was constructed with war spoils from the First Jewish-Roman War, and promoted games that lasted for a hundred days. These games were for celebrating the victory over the Jews and included gladiatorial combats, chariot races and a sensational mock naval battle that flooded the grounds of the Colosseum.^[87][88]

Titus died of fever in 81 AD, being succeeded by his brother Domitian. As emperor, Domitian assumed totalitarian characteristics^[89] and thought he could be a new Augustus, and tried to make a personal cult of himself.

Titus constructed a line of roads and fortifications on the borders of modern-day Germany; and his general Gnaeus Julius Agricola conquered much of Britain, leading the Roman world so far as Scotland. On the other hand, his failed war against Dacia was a humiliating defeat.^[90]

Domitian ruled for fifteen years, and his reign was marked by his attempts to compare himself to the gods. He constructed at least two temples in honour of Jupiter, the greatest deity in Roman religion. He also liked to be called "Dominus et Deus" ("Master and God").^[91] The nobles disliked his rule, and he was murdered by a conspiracy involving his own wife, Domitia Longina, in 96 AD.

Nerva-Antonine dynasty[link]

The Roman Empire at its greatest extent under Trajan in AD 117

During the rule of the Nerva-Antonine, Rome reached its territorial and economical apogee.^[92] This time was a peaceful one for Rome: the criteria for choosing an emperor were the qualities of the candidate and no longer ties of kinship; additionally there were no civil wars or military defeats in that time.

Following Domitian's murder, the Senate rapidly appointed Nerva to hold imperial dignity – this was the first time that senators chose the emperor since Octavian was honored with the titles of princeps and Augustus. Nerva had a noble ancestry, and he served as an advisor to Nero and the Flavians. His rule restored many of the liberties once taken by Domitian^[93] and started the last golden era of Rome.

Trajan[link]

Nerva died in 98 AD and the successor was his heir, the general Trajan. Trajan was born in a non-patrician family from Hispania and his preeminence emerged in the army, under Domitian. He is the second of the Five Good Emperors, the first being Nerva.

Trajan was greeted by the people of Rome with great enthusiasm, which he justified by governing well and without the bloodiness that had marked Domitian's reign. He freed many people who had been unjustly imprisoned by Domitian and returned a great deal of private property that Domitian had confiscated; a process begun by Nerva before his death.^[94]

Trajan conquered Dacia, and defeated the king Decebalus, who had defeated Domitian's forces. In the First Dacian War (101–102), the defeated Dacia became a client kingdom; in the Second Dacian War (105–106), Trajan completely devastated the enemy's resistance and annexed Dacia to the Empire. Trajan also annexed the client state of Nabatea to form the province of Arabia Petraea, which included the lands of southern Syria and northwestern Arabia.^[95]

He erected many buildings that still survive to this day, such as Trajan's Forum, Trajan's Market and Trajan's Column. His main architect was Apollodorus of Damascus; Apollodorus made the project of the Forum and of the Column, and also reformed the Pantheon. Trajan's triumphal arches in Ancona and Beneventum are other constructions projected by him. In Dacian War, Apollodorus made a great bridge over the Danube for Trajan.^[96]

Trajan's final war was against Parthia. When Parthia appointed a king for Armenia who was unacceptable (Parthia and Rome shared dominance over Armenia) to Rome, he declared war. He probably wanted to be the first Roman leader to conquer Parthia, and repeat the glory of Alexander the Great, conqueror of Asia, whom Trajan next followed in the clash of Greek-Romans and the Persian cultures.^[97] In 113 he marched to Armenia and deposed the local king. In 115 Trajan turned south into the core of Parthian hegemony, taking the Northern Mesopotamian cities of Nisibis and Batnae and organizing a province of Mesopotamia in the beginning of 116, when coins were issued announcing that Armenia and Mesopotamia had been put under the authority of the Roman people.^[98]

Eugène Delacroix. The Justice of Trajan (fragment).

In that same year, he captured Seleucia and the Parthian capital Ctesiphon. After defeating a Parthian revolt and a Jewish revolt, he withdrew due to health issues. In 117, his illness grew and he died of edema. He nominated Hadrian as his heir. Under Trajan's leadership the Roman Empire reached the peak of its territorial expansion; Rome's dominion now spanned 2.5 million square miles (6.5 million km²).^[99]

From Hadrian to Commodus[link]

The prosperity brought by Nerva and Trajan continued in the reigns of subsequent emperors, from Hadrian to Marcus Aurelius. Hadrian withdrew all the troops stationed in Parthia and Mesopotamia, abandoning Trajan's conquests. Hadrian's government was very peaceful, since he avoided wars: he constructed fortifications and walls, like the famous Hadrian's Wall between Roman Britain and the barbarians of modern-day Scotland.

A famous philhellenist, he promoted culture, specially the Greek culture. He also forbade torture and humanized the laws. Hadrian built many aqueducts, baths, libraries and theaters; additionally, he traveled nearly every single province in the Empire to check the military and infrastructural conditions.^[100]

After Hadrian's death at 138, his successor Antoninus Pius built temples, theaters, and mausoleums, promoted the arts and sciences, and bestowed honours and financial rewards upon the teachers of rhetoric and philosophy. Antoninus made few initial changes when he became emperor, leaving intact as far as possible the arrangements instituted by Hadrian. Antoninus expanded the Roman Britain by invading southern Scotland and building the Antonine Wall.^[101] He also continued Hadrian's policy of humanizing the laws. He died in 161 AD.

Marcus Aurelius, known as the Philosopher, was the last of the Five Good Emperors. He was a stoic philosopher and wrote a book called Meditations. He defeated barbarian tribes in the Marcomannic Wars as well as the Parthian Empire.^[102] His co-emperor, Lucius Verus died in 169 AD, probably victim of the Antonine Plague, a pandemic that swept nearly five million people through the Empire in 165–180 AD.^[103]

From Nerva to Marcus Aurelius, the empire achieved an unprecedented happy and glorious status. The powerful influence of laws and manners had gradually cemented the union of the provinces. All the citizens enjoyed and abused the advantages of wealth. The image of a free constitution was preserved with decent reverence. The Roman senate appeared to possess the sovereign authority, and devolved on the emperors all the executive powers of government. The Five Good Emperors’ rule is considered the greatest era of the Empire.^[104]

Commodus, son of Marcus Aurelius, became emperor after his father's death. He is not counted in the Five Good Emperors group. Firstly, because he had direct kinship with the latter emperor; in addition, he was not like his predecessors in personality and acts. Commodus usually took part on gladiatorial combats – a symbol of brutality and roughness , since a gladiator was always a slave -, and was a cruel, lewd and narcissistic man. He killed many citizens and his reign is the beginning of Roman decadence, as stated Cassius Dio: "(Rome has transformed) from a kingdom of gold to one of iron and rust".^[105]

Severan dynasty[link]

Commodus was killed by a conspiracy involving Quintus Aemilius Laetus and his wife Marcia in late 192 AD. The following year is known as the Year of the Five Emperors. Pertinax, Didius Julianus, Pescennius Niger, Clodius Albinus and Septimius Severus fought for the imperial dignity. After many battles against the other generals, Severus established himself as the new emperor. He and his successors governed with the legions' support – and they paid money for this support. The changes on coinage and military expenditures were the root of the financial crisis that marked the Crisis of the 3rd century.

Septimius Severus[link]

Septimius Severus at Glyptothek, Munich

Severus was enthroned after invading Rome and having Didius Julianus killed. His two other rivals, Pescennius Niger and Clodius Albinus, were both were hailed as Imperator. Severus quickly subdued Niger in Byzantium and promised to Albinus the title of Caesar (which meant he would be a co-emperor).^[106] However, Severus betrayed Albinus by blaming him on a plot against his life. Severus marched to Gaul and defeated Albinus. For these acts, Machiavelli said that Severus was "a ferocious lion and a clever fox"^[107]