🏺Early World Civilizations Unit 10 – The Roman Republic and Empire

The Roman Republic and Empire shaped Western civilization for centuries. From its humble beginnings as a small city-state, Rome grew into a vast empire spanning Europe, North Africa, and the Middle East. Its system of government, laws, and cultural achievements left an indelible mark on history. Rome's journey from republic to empire was marked by key figures like Julius Caesar and Augustus. The Pax Romana brought stability and prosperity, but internal strife and external pressures eventually led to the fall of the Western Empire. The Eastern Empire continued as Byzantium for another millennium.

Key Figures and Events

  • Romulus and Remus, legendary founders of Rome raised by a she-wolf
  • Lucius Junius Brutus led the overthrow of the Roman monarchy in 509 BCE establishing the Roman Republic
  • Hannibal, Carthaginian general who invaded Italy during the Second Punic War (218-201 BCE)
    • Crossed the Alps with war elephants in a surprise attack on Rome
    • Defeated the Romans at the Battle of Cannae in 216 BCE
  • Scipio Africanus, Roman general who defeated Hannibal at the Battle of Zama in 202 BCE ending the Second Punic War
  • Julius Caesar, Roman general and statesman who played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire
    • Formed the First Triumvirate with Pompey and Crassus in 60 BCE
    • Conquered Gaul (modern-day France) from 58-50 BCE
    • Crossed the Rubicon River in 49 BCE sparking a civil war
    • Appointed dictator for life in 44 BCE but assassinated shortly after
  • Augustus (Octavian), first Roman emperor who established the Principate in 27 BCE ushering in the Pax Romana
  • Constantine the Great, first Christian emperor who legalized Christianity with the Edict of Milan in 313 CE
    • Founded Constantinople (modern-day Istanbul) as the new capital of the Roman Empire in 330 CE

Rise of the Roman Republic

  • Rome began as a small city-state in central Italy around the 8th century BCE
  • Overthrew Etruscan rule and expelled its last king, Lucius Tarquinius Superbus, in 509 BCE
  • Established a republican system of government led by two elected consuls who served one-year terms
    • Consuls held executive power and served as commanders-in-chief of the army
    • Advised by the Senate, a council of wealthy aristocrats known as patricians
  • Struggled between the patricians and the common people, known as plebeians, characterized early republican politics
    • Plebeians seceded from the city in 494 BCE to protest their lack of political power
    • Conflict resolved with the creation of the office of tribune, elected representatives who could veto actions of the magistrates and Senate
  • Twelve Tables, first written law code, published in 449 BCE to address plebeian grievances and establish legal equality
  • Gradual expansion of voting rights and access to public office for plebeians occurred throughout the early republic

Republican Government Structure

  • Centered around the Senate and various assemblies representing different groups of citizens
  • Senate served as the primary advisory body consisting of around 300 members drawn from the patrician class
    • Controlled public finances, foreign policy, and appointment of military commanders
    • Membership was for life and vacancies were filled by censors who also conducted the census
  • Assemblies passed laws, elected magistrates, and served as courts of appeal
    • Centuriate Assembly organized citizens into voting units called centuries based on wealth and elected consuls and praetors
    • Tribal Assembly organized citizens into voting units called tribes based on geography and elected tribunes and quaestors
  • Magistrates were elected officials who held executive, legislative, and judicial powers
    • Consuls (2) held supreme civil and military authority and presided over the Senate and assemblies
    • Praetors (8) served as judges and governors of provinces
    • Quaestors (20) served as financial officers and administrative assistants
    • Aediles (4) supervised public works, festivals, and the grain supply
  • Dictator, an emergency magistrate appointed for a six-month term in times of crisis, held absolute power

Roman Expansion and Conquest

  • Conquest of the Italian peninsula completed by 264 BCE after the Samnite Wars and Pyrrhic War
  • Punic Wars (264-146 BCE) against Carthage resulted in the annexation of Sicily, Sardinia, Corsica, and Spain
    • First Punic War (264-241 BCE) fought for control of Sicily and won by Rome
    • Second Punic War (218-201 BCE) saw Hannibal invade Italy but ultimately ended in Carthaginian defeat
    • Third Punic War (149-146 BCE) ended with the complete destruction of Carthage
  • Macedonian Wars (214-148 BCE) against Hellenistic kingdoms in Greece and Asia Minor established Roman dominance in the eastern Mediterranean
  • Jugurthine War (112-106 BCE) in Numidia won by Gaius Marius demonstrating the effectiveness of his military reforms
  • Mithridatic Wars (88-63 BCE) against Pontus in Anatolia consolidated Roman control of Asia Minor
  • Gallic Wars (58-50 BCE) led by Julius Caesar conquered Gaul and expanded Roman territory to the Rhine River
  • Roman province system established to administer conquered territories and extract resources through taxation and tribute

Transition to Empire

  • Gracchi brothers, Tiberius and Gaius, attempted land and political reforms in the 130s-120s BCE but were assassinated by the Senate
  • Gaius Marius and Lucius Cornelius Sulla fought a series of civil wars in the 80s BCE over control of the Republic
    • Marius allied with the populares faction supporting the plebeians while Sulla allied with the optimates faction supporting the aristocracy
    • Sulla emerged victorious and became dictator in 82 BCE implementing a series of constitutional reforms
  • First Triumvirate formed in 60 BCE between Julius Caesar, Pompey, and Crassus as an informal political alliance
    • Collapsed after the death of Crassus in 53 BCE and the rivalry between Caesar and Pompey intensified
    • Caesar crossed the Rubicon River in 49 BCE sparking a civil war against Pompey and the Senate
    • Caesar emerged victorious and was appointed dictator for life in 44 BCE but was assassinated shortly after
  • Second Triumvirate formed in 43 BCE between Octavian (Augustus), Mark Antony, and Marcus Lepidus to avenge Caesar's death and divide the Republic among themselves
    • Octavian and Antony defeated the assassins, Brutus and Cassius, at the Battle of Philippi in 42 BCE
    • Lepidus was sidelined in 36 BCE leaving Octavian and Antony as rivals
    • Octavian defeated Antony and Cleopatra at the Battle of Actium in 31 BCE becoming the sole ruler of Rome
  • Octavian granted the title Augustus by the Senate in 27 BCE and became the first Roman emperor establishing the Principate

Imperial Governance and Administration

  • Principate (27 BCE-284 CE) established by Augustus as a form of government where the emperor ruled as the "first citizen" while maintaining the facade of the Republic
    • Emperor held the titles of princeps (first citizen), imperator (commander-in-chief), and pontifex maximus (high priest)
    • Retained the Senate and assemblies but their power was greatly diminished
    • Praetorian Guard served as the emperor's personal bodyguard and became a powerful political force
  • Diocletian (r. 284-305 CE) established the Dominate, a more openly autocratic form of government
    • Divided the empire into four administrative regions each ruled by a co-emperor (Tetrarchy)
    • Implemented reforms to stabilize the economy and military
  • Constantine the Great (r. 306-337 CE) reunited the empire under his sole rule and legalized Christianity
    • Founded Constantinople as the new capital in the east
  • Imperial bureaucracy expanded to administer the vast empire
    • Central government consisted of the imperial court, treasury, and various ministries
    • Provincial administration headed by governors appointed by the emperor
    • Cities managed by local councils (curiae) responsible for tax collection and public works
  • Roman law codified and standardized across the empire
    • Twelve Tables formed the basis of Roman civil law
    • Praetor's Edict and imperial constitutions further developed the law
    • Justinian's Code (529-534 CE) compiled and systematized Roman law

Roman Society and Culture

  • Patriarchal society where the paterfamilias (male head of household) held authority over his family and household
  • Women had limited legal rights and were expected to manage the household and raise children
    • Some upper-class women gained influence through their husbands and sons
    • Notable women include Livia (wife of Augustus) and Julia Domna (wife of Septimius Severus)
  • Complex social hierarchy divided into patricians, equestrians, plebeians, and slaves
    • Patricians were the wealthy aristocratic class that dominated politics and society
    • Equestrians were the middle class that engaged in commerce and filled administrative positions
    • Plebeians were the common people that worked as farmers, artisans, and laborers
    • Slaves were considered property and performed manual labor and domestic service
  • Education was highly valued among the upper classes
    • Children were educated at home by tutors or in private schools
    • Curriculum focused on rhetoric, philosophy, Greek language and literature
  • Polytheistic religion centered around the worship of gods and goddesses
    • Major gods included Jupiter, Juno, Minerva, Mars, Venus, and Neptune
    • Emperor worship became prevalent during the imperial period as a way to unify the empire
    • Mystery cults such as Mithraism and worship of Isis gained popularity
    • Christianity spread throughout the empire and was legalized by Constantine in 313 CE
  • Vibrant cultural life that produced significant works of art, architecture, and literature
    • Colosseum and Pantheon are iconic examples of Roman architecture and engineering
    • Latin literature flourished with works by Cicero, Virgil, Ovid, and Tacitus
    • Roman art and sculpture heavily influenced by Greek styles but developed distinct characteristics

Legacy and Fall of Rome

  • Pax Romana (27 BCE-180 CE) was a period of relative peace, stability, and prosperity
    • Empire reached its greatest territorial extent under Trajan (r. 98-117 CE)
    • Golden Age of Latin literature and art flourished
    • Economic growth and trade expanded throughout the empire
  • Crisis of the Third Century (235-284 CE) marked by political instability, economic decline, and foreign invasions
    • Frequent turnover of emperors and civil wars weakened the empire
    • Debasement of currency led to inflation and economic instability
    • Germanic tribes and Sassanid Persians invaded and threatened the frontiers
  • Diocletian and Constantine implemented reforms to stabilize the empire in the late 3rd and early 4th centuries CE
    • Diocletian's Tetrarchy divided the empire and strengthened imperial authority
    • Constantine legalized Christianity and founded Constantinople as the new capital
  • Decline and fall of the Western Roman Empire in the 5th century CE
    • Gothic War (376-382 CE) and Battle of Adrianople (378 CE) saw the Goths defeat the Romans and settle within the empire
    • Sack of Rome by the Visigoths in 410 CE and the Vandals in 455 CE
    • Last Western Roman Emperor, Romulus Augustulus, deposed by Germanic general Odoacer in 476 CE
  • Eastern Roman Empire (Byzantine Empire) continued until the fall of Constantinople to the Ottoman Turks in 1453 CE
  • Roman legacy had a profound impact on Western civilization
    • Latin language and alphabet used throughout Europe and influenced Romance languages
    • Roman law formed the basis of many modern legal systems
    • Christianity spread throughout the empire and became the dominant religion in Europe
    • Classical art, architecture, and literature rediscovered and emulated during the Renaissance
    • Political ideas of republicanism and imperial governance influenced later governments and empires


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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.