Roman Empire

The Roman Empire was a state that dominated the Mediterranean and much of Europe, Western Asia, and North Africa during the classical period. The Roman Republic had previously conquered most of these territories, which later came under permanent single-person rule following Octavian's rise to power and the establishment of the Augustan Principate in 27 BC. By the late 3rd century AD, the empire had been divided many times. The Western Roman Empire collapsed in 476 AD, whereas the Eastern Roman Empire persisted until the fall of Constantinople in 1453.

Rome had begun expanding shortly after the founding of the Roman Republic in the 6th century BC, though not outside the Italian Peninsula until the 3rd century BC. The Republic was not a nation-state in the modern sense, but a network of self-ruled towns (with varying degrees of independence from the Senate) and provinces administered by military commanders. It was governed by annually elected magistrates (Roman consuls above all) in conjunction with the Senate The 1st century BC was a time of political and military upheaval, which ultimately led to rule by emperors. The consuls' military power rested in the Roman legal concept of imperium, meaning "command" (typically in a military sense). Occasionally, successful consuls or generals were given the honorary title imperator (commander); this is the origin of the word emperor, since this title was always bestowed to the early emperors.

Rome suffered a long series of internal conflicts, conspiracies, and civil wars from the late second century BC, (see Crisis of the Roman Republic) while greatly extending its power beyond Italy. In 44 BC Julius Caesar was briefly perpetual dictator before being assassinated by a faction that opposed his concentration of power. This faction was driven from Rome and defeated at the Battle of Philippi in 42 BC by Mark Antony and Caesar's adopted son Octavian. Antony and Octavian divided the Roman world between them, but this did not last long. Octavian's forces defeated those of Mark Antony and Cleopatra at the Battle of Actium in 31 BC. In 27 BC the Senate gave him the title Augustus ("venerated") and made him princeps ("foremost") with proconsular imperium, thus beginning the Principate, the first epoch of Roman imperial history. Although the republic stood in name, Augustus had all meaningful authority. During his 40-year rule, a new constitutional order emerged so that, upon his death, Tiberius would succeed him as the new de facto monarch.

The 200 years that began with Augustus's rule are traditionally regarded as the Pax Romana ("Roman Peace"). The cohesion of the empire was furthered by a degree of social stability and economic prosperity that Rome had never before experienced. Uprisings in the provinces were infrequent and put down "mercilessly and swiftly". The success of Augustus in establishing principles of dynastic succession was limited by his outliving a number of talented potential heirs. The Julio-Claudian dynasty lasted for four more emperors—Tiberius, Caligula, Claudius, and Nero—before it yielded in 69 AD to the strife-torn Year of the Four Emperors, from which Vespasian emerged as the victor. Vespasian became the founder of the brief Flavian dynasty, followed by the Nerva–Antonine dynasty which produced the "Five Good Emperors": Nerva, Trajan, Hadrian, Antoninus Pius, and Marcus Aurelius.

Among the so-called "Five Good Emperors", Hadrian (r. 117–138) is particularly noted for consolidating the empire's frontiers and embarking on ambitious building projects throughout the provinces. In Judaea, which had long been the center of Jewish national and religious life, his reign marked a decisive turning point. After earlier Jewish resistance to Roman rule, Hadrian visited the region in 129/130 AD and refounded Jerusalem as the Roman colony Aelia Capitolina, naming it after his family (Aelius) and the Capitoline Triad. The refoundation overlaid the destroyed Jewish city with a new Roman urban plan, and included the construction of a Temple to Jupiter on the site of the former Jewish Temple. Later tradition and archaeological evidence also indicate a Temple of Venus near the site of the Holy Sepulchre.

Hadrian's measures, combined with restrictions on Jewish practices, helped spark the Bar Kokhba Revolt (132–135 AD). After crushing the uprising, Roman forces expelled most Jews from Jerusalem, barring their entry except on certain days, and rebuilt the city as a statement of imperial power and domination. Most scholars consider Hadrianic Aelia to have been unwalled, with free-standing gate complexes (such as the northern gate beneath today's Damascus Gate) rather than a continuous defensive circuit.

In the view of contemporary Greek historian Cassius Dio, the accession of Commodus in 180 marked the descent "from a kingdom of gold to one of rust and iron", a comment which has led some historians, notably Edward Gibbon, to take Commodus' reign as the beginning of the Empire's decline.

In 212, during the reign of Caracalla, Roman citizenship was granted to all freeborn inhabitants of the empire. The Severan dynasty was tumultuous; an emperor's reign was ended routinely by his murder or execution and, following its collapse, the Empire was engulfed by the Crisis of the Third Century, a period of invasions, civil strife, economic disorder, and plague. In defining historical epochs, this crisis sometimes marks the transition from classical to late antiquity. Aurelian (r. 270–275) stabilised the empire militarily and Diocletian reorganised and restored much of it in 285. Diocletian's reign brought the empire's most concerted effort against the perceived threat of Christianity, the "Great Persecution".

Diocletian divided the empire into four regions, each ruled by a separate tetrarch. Confident that he fixed the disorder plaguing Rome, he abdicated along with his co-emperor, but the Tetrarchy collapsed shortly after. Order was eventually restored by Constantine the Great, who became the first emperor to convert to Christianity, and who established Constantinople as the new capital of the Eastern Empire. During the decades of the Constantinian and Valentinian dynasties, the empire was divided along an east–west axis, with dual power centres in Constantinople and Rome. Julian, who under the influence of his adviser Mardonius attempted to restore Classical Roman and Hellenistic religion, only briefly interrupted the succession of Christian emperors. Theodosius I, the last emperor to rule over both East and West, died in 395 after making Christianity the state religion.

At the time of Augustus, it is estimated that the percentage of the population in Roman Italy reduced to slavery was around 20-30%, or one to two millions slaves, making Rome one of five historical "slave societies" in which slaves constituted at least a fifth of the population and played a major role in the economy. In urban settings, slaves might be professionals such as teachers, physicians, chefs, and accountants; the majority of slaves provided trained or unskilled labour. Agriculture and industry, such as milling and mining, relied on the exploitation of slaves. Outside Italy, slaves were on average an estimated 10 to 20% of the population, sparse in Roman Egypt but more concentrated in some Greek areas. Expanding Roman ownership of arable land and industries affected preexisting practices of slavery in the provinces. Although slavery has often been regarded as waning in the 3rd and 4th centuries, it remained an integral part of Roman society until gradually ceasing in the 6th and 7th centuries with the disintegration of the complex Imperial economy.

Laws pertaining to slavery were "extremely intricate". Slaves were considered property and had no legal personhood. They could be subjected to forms of corporal punishment not normally exercised on citizens, sexual exploitation, torture, and summary execution. A slave could not as a matter of law be raped; a slave's rapist had to be prosecuted by the owner for property damage under the Aquilian Law. Slaves had no right to the form of legal marriage called conubium, but their unions were sometimes recognized. Technically, a slave could not own property, but a slave who conducted business might be given access to an individual fund (peculium) that he could use, depending on the degree of trust and co-operation between owner and slave. Within a household or workplace, a hierarchy of slaves might exist, with one slave acting as the master of others. Talented slaves might accumulate a large enough peculium to justify their freedom, or be manumitted for services rendered. Manumission had become frequent enough that in 2 BC a law (Lex Fufia Caninia) limited the number of slaves an owner was allowed to free in his will.

Following the Servile Wars of the Republic, legislation under Augustus and his successors shows a driving concern for controlling the threat of rebellions through limiting the size of work groups, and for hunting down fugitive slaves. Over time slaves gained increased legal protection, including the right to file complaints against their masters. A bill of sale might contain a clause stipulating that the slave could not be employed for prostitution, as prostitutes in ancient Rome were often slaves. The burgeoning trade in eunuchs in the late 1st century prompted legislation that prohibited the castration of a slave against his will "for lust or gain".

Roman slavery was not based on race. Generally, slaves in Italy were indigenous Italians, with a minority of foreigners (including both slaves and freedmen) estimated at 5% of the total in the capital at its peak, where their number was largest. Foreign slaves had higher mortality and lower birth rates than natives and were sometimes even subjected to mass expulsions. The average recorded age at death for the slaves of the city of Rome was seventeen and a half years (17.2 for males; 17.9 for females).

During the period of republican expansionism when slavery had become pervasive, war captives were a main source of slaves. The range of ethnicities among slaves to some extent reflected that of the armies Rome defeated in war, and the conquest of Greece brought a number of highly skilled and educated slaves. Slaves were also traded in markets and sometimes sold by pirates. Infant abandonment and self-enslavement among the poor were other sources. Vernae, by contrast, were "homegrown" slaves born to female slaves within the household, estate or farm. Although they had no special legal status, an owner who mistreated or failed to care for his vernae faced social disapproval, as they were considered part of the family household and in some cases might actually be the children of free males in the family.

Rome differed from Greek city-states in allowing freed slaves to become citizens; any future children of a freedman were born free, with full rights of citizenship. After manumission, a slave who had belonged to a Roman citizen enjoyed active political freedom (libertas), including the right to vote. His former master became his patron (patronus): the two continued to have customary and legal obligations to each other. During the early Empire, freedmen held key positions in the government bureaucracy, so much so that Hadrian limited their participation by law. The rise of successful freedmen—through political influence or wealth—is a characteristic of early Imperial society. The prosperity of a high-achieving group of freedmen is attested by inscriptions throughout the Empire.

The Latin word ordo (plural ordines) is translated variously and inexactly into English as "class, order, rank". One purpose of the Roman census was to determine the ordo to which an individual belonged. Two of the highest ordines in Rome were the senatorial and equestrian. Outside Rome, cities or colonies were led by decurions, also known as curiales.

"Senator" was not itself an elected office in ancient Rome; an individual gained admission to the Senate after he had been elected to and served at least one term as an executive magistrate. A senator also had to meet a minimum property requirement of 1 million sestertii. Not all men who qualified for the ordo senatorius chose to take a Senate seat, which required legal domicile at Rome. Emperors often filled vacancies in the 600-member body by appointment. A senator's son belonged to the ordo senatorius, but he had to qualify on his own merits for admission to the Senate. A senator could be removed for violating moral standards.

Taxation under the Empire amounted to about 5% of its gross product. The typical tax rate for individuals ranged from 2 to 5%. The tax code was "bewildering" in its complicated system of direct and indirect taxes, some paid in cash and some in kind. Taxes might be specific to a province, or kinds of properties such as fisheries; they might be temporary. Tax collection was justified by the need to maintain the military, and taxpayers sometimes got a refund if the army captured a surplus of booty. In-kind taxes were accepted from less-monetized areas, particularly those who could supply grain or goods to army camps.

The primary source of direct tax revenue was individuals, who paid a poll tax and a tax on their land, construed as a tax on its produce or productive capacity. Tax obligations were determined by the census: each head of household provided a headcount of his household, as well as an accounting of his property. A major source of indirect-tax revenue was the portoria, customs and tolls on trade, including among provinces. Towards the end of his reign, Augustus instituted a 4% tax on the sale of slaves, which Nero shifted from the purchaser to the dealers, who responded by raising their prices. An owner who manumitted a slave paid a "freedom tax", calculated at 5% of value. An inheritance tax of 5% was assessed when Roman citizens above a certain net worth left property to anyone outside their immediate family. Revenues from the estate tax and from an auction tax went towards the veterans' pension fund (aerarium militare).

Low taxes helped the Roman aristocracy increase their wealth, which equalled or exceeded the revenues of the central government. An emperor sometimes replenished his treasury by confiscating the estates of the "super-rich", but in the later period, the resistance of the wealthy to paying taxes was one of the factors contributing to the collapse of the Empire.

The Empire is best thought of as a network of regional economies, based on a form of "political capitalism" in which the state regulated commerce to assure its own revenues. Economic growth, though not comparable to modern economies, was greater than that of most other societies prior to industrialization. Territorial conquests permitted a large-scale reorganization of land use that resulted in agricultural surplus and specialization, particularly in north Africa. Some cities were known for particular industries. The scale of urban building indicates a significant construction industry. Papyri preserve complex accounting methods that suggest elements of economic rationalism, and the Empire was highly monetized. Although the means of communication and transport were limited in antiquity, transportation in the 1st and 2nd centuries expanded greatly, and trade routes connected regional economies. The supply contracts for the army drew on local suppliers near the base (castrum), throughout the province, and across provincial borders. Economic historians vary in their calculations of the gross domestic product during the Principate. In the sample years of 14, 100, and 150 AD, estimates of per capita GDP range from 166 to 380 HS. The GDP per capita of Italy is estimated as 40 to 66% higher than in the rest of the Empire, due to tax transfers from the provinces and the concentration of elite income.

Economic dynamism resulted in social mobility. Although aristocratic values permeated traditional elite society, wealth requirements for rank indicate a strong tendency towards plutocracy. Prestige could be obtained through investing one's wealth in grand estates or townhouses, luxury items, public entertainments, funerary monuments, and religious dedications. Guilds (collegia) and corporations (corpora) provided support for individuals to succeed through networking. "There can be little doubt that the lower classes of... provincial towns of the Roman Empire enjoyed a high standard of living not equaled again in Western Europe until the 19th century". Households in the top 1.5% of income distribution captured about 20% of income. The "vast majority" produced more than half of the total income, but lived near subsistence.

The early Empire was monetized to a near-universal extent, using money as a way to express prices and debts. The sestertius (English "sesterces", symbolized as HS) was the basic unit of reckoning value into the 4th century, though the silver denarius, worth four sesterces, was also used beginning in the Severan dynasty. The smallest coin commonly circulated was the bronze as, one-tenth denarius. Bullion and ingots seem not to have counted as pecunia ("money") and were used only on the frontiers. Romans in the first and second centuries counted coins, rather than weighing them—an indication that the coin was valued on its face. This tendency towards fiat money led to the debasement of Roman coinage in the later Empire. The standardization of money throughout the Empire promoted trade and market integration. The high amount of metal coinage in circulation increased the money supply for trading or saving.

Rome had no central bank, and regulation of the banking system was minimal. Banks of classical antiquity typically kept less in reserves than the full total of customers' deposits. A typical bank had fairly limited capital, and often only one principal. Seneca assumes that anyone involved in Roman commerce needs access to credit. A professional deposit banker received and held deposits for a fixed or indefinite term, and lent money to third parties. The senatorial elite were involved heavily in private lending, both as creditors and borrowers. The holder of a debt could use it as a means of payment by transferring it to another party, without cash changing hands. Although it has sometimes been thought that ancient Rome lacked documentary transactions, the system of banks throughout the Empire permitted the exchange of large sums without physically transferring coins, in part because of the risks of moving large amounts of cash. Only one serious credit shortage is known to have occurred in the early Empire, in 33 AD; generally, available capital exceeded the amount needed by borrowers. The central government itself did not borrow money, and without public debt had to fund deficits from cash reserves.

Emperors of the Antonine and Severan dynasties debased the currency, particularly the denarius, under the pressures of meeting military payrolls. Sudden inflation under Commodus damaged the credit market. In the mid-200s, the supply of specie contracted sharply. Conditions during the Crisis of the Third Century—such as reductions in long-distance trade, disruption of mining operations, and the physical transfer of gold coinage outside the empire by invading enemies—greatly diminished the money supply and the banking sector. Although Roman coinage had long been fiat money or fiduciary currency, general economic anxieties came to a head under Aurelian, and bankers lost confidence in coins. Despite Diocletian's introduction of the gold solidus and monetary reforms, the credit market of the Empire never recovered its former robustness.

The city was viewed as fostering civilization by being "properly designed, ordered, and adorned". Augustus undertook a vast building programme in Rome, supported public displays of art that expressed imperial ideology, and reorganized the city into neighbourhoods (vici) administered at the local level with police and firefighting services. A focus of Augustan monumental architecture was the Campus Martius, an open area outside the city centre: the Altar of Augustan Peace (Ara Pacis Augustae) was located there, as was an obelisk imported from Egypt that formed the pointer (gnomon) of a horologium. With its public gardens, the Campus was among the most attractive places in Rome to visit.

City planning and urban lifestyles was influenced by the Greeks early on, and in the Eastern Empire, Roman rule shaped the development of cities that already had a strong Hellenistic character. Cities such as Athens, Aphrodisias, Ephesus and Gerasa tailored city planning and architecture to imperial ideals, while expressing their individual identity and regional preeminence. In areas inhabited by Celtic-speaking peoples, Rome encouraged the development of urban centres with stone temples, forums, monumental fountains, and amphitheatres, often on or near the sites of preexisting walled settlements known as oppida. Urbanization in Roman Africa expanded on Greek and Punic coastal cities.

The network of cities (coloniae, municipia, civitates or in Greek terms poleis) was a primary cohesive force during the Pax Romana. Romans of the 1st and 2nd centuries were encouraged to "inculcate the habits of peacetime".. As the classicist Clifford Ando noted:

Most of the cultural appurtenances popularly associated with imperial culture—public cult and its games and civic banquets, competitions for artists, speakers, and athletes, as well as the funding of the great majority of public buildings and public display of art—were financed by private individuals, whose expenditures in this regard helped to justify their economic power and legal and provincial privileges.

In the city of Rome, most people lived in multistory apartment buildings (insulae) that were often squalid firetraps. Public facilities—such as baths (thermae), toilets with running water (latrinae), basins or elaborate fountains (nymphea) delivering fresh water, and large-scale entertainments such as chariot races and gladiator combat—were aimed primarily at the common people.

The public baths served hygienic, social and cultural functions. Bathing was the focus of daily socializing. Roman baths were distinguished by a series of rooms that offered communal bathing in three temperatures, with amenities that might include an exercise room, sauna, exfoliation spa, ball court, or outdoor swimming pool. Baths had hypocaust heating: the floors were suspended over hot-air channels. Public baths were part of urban culture throughout the provinces, but in the late 4th century, individual tubs began to replace communal bathing. Christians were advised to go to the baths only for hygiene.

Rich families from Rome usually had two or more houses: a townhouse (domus) and at least one luxury home (villa) outside the city. The domus was a privately owned single-family house, and might be furnished with a private bath (balneum), but it was not a place to retreat from public life. Although some neighbourhoods show a higher concentration of such houses, they were not segregated enclaves. The domus was meant to be visible and accessible. The atrium served as a reception hall in which the paterfamilias (head of household) met with clients every morning. It was a centre of family religious rites, containing a shrine and images of family ancestors. The houses were located on busy public roads, and ground-level spaces were often rented out as shops (tabernae). In addition to a kitchen garden—windowboxes might substitute in the insulae—townhouses typically enclosed a peristyle garden.

The villa by contrast was an escape from the city, and in literature represents a lifestyle that balances intellectual and artistic interests (otium) with an appreciation of nature and agriculture. Ideally a villa commanded a view or vista, carefully framed by the architectural design.

Initial Roman painting drew from Etruscan and Greek models and techniques. Examples of Roman paintings can be found in palaces, catacombs and villas. Much of what is known of Roman painting is from the interior decoration of private homes, particularly as preserved by the eruption of Vesuvius. In addition to decorative borders and panels with geometric or vegetative motifs, wall painting depicts scenes from mythology and theatre, landscapes and gardens, spectacles, everyday life, and erotic art.

Mosaics are among the most enduring of Roman decorative arts, and are found on floors and other architectural features. The most common is the tessellated mosaic, formed from uniform pieces (tesserae) of materials such as stone and glass. Opus sectile is a related technique in which flat stone, usually coloured marble, is cut precisely into shapes from which geometric or figurative patterns are formed. This more difficult technique became especially popular for luxury surfaces in the 4th century (e.g. the Basilica of Junius Bassus).

Figurative mosaics share many themes with painting, and in some cases use almost identical compositions. Geometric patterns and mythological scenes occur throughout the Empire. In North Africa, a particularly rich source of mosaics, homeowners often chose scenes of life on their estates, hunting, agriculture, and local wildlife. Plentiful and major examples of Roman mosaics come also from present-day Syria (particularly the Antioch mosaics), Italy, southern France, Spain, and Portugal.

Decorative arts for luxury consumers included fine pottery, silver and bronze vessels and implements, and glassware. Pottery manufacturing was economically important, as were the glass and metalworking industries. Imports stimulated new regional centres of production. Southern Gaul became a leading producer of the finer red-gloss pottery (terra sigillata) that was a major trade good in 1st-century Europe. Glassblowing was regarded by the Romans as originating in Syria in the 1st century BC, and by the 3rd century, Egypt and the Rhineland had become noted for fine glass.

• Silver cup, from the Boscoreale Treasure (early 1st century AD)

• Finely decorated Gallo-Roman terra sigillata bowl

• Gold earrings with gemstones, 3rd century

• Glass cage cup from the Rhineland, 4th century

In Roman tradition, borrowed from the Greeks, literary theatre was performed by all-male troupes that used face masks with exaggerated facial expressions to portray emotion. Female roles were played by men in drag (travesti). Roman literary theatre tradition is represented in Latin literature by the tragedies of Seneca, for example.

More popular than literary theatre was the genre-defying mimus theatre, which featured scripted scenarios with free improvisation, risqué language and sex scenes, action sequences, and political satire, along with dance, juggling, acrobatics, tightrope walking, striptease, and dancing bears. Unlike literary theatre, mimus was played without masks, and encouraged stylistic realism. Female roles were performed by women. Mimus was related to pantomimus, an early form of story ballet that contained no spoken dialogue but rather a sung libretto, often mythological, either tragic or comic.

Although sometimes regarded as foreign, music and dance existed in Rome from earliest times. Music was customary at funerals, and the tibia, a woodwind instrument, was played at sacrifices. Song (carmen) was integral to almost every social occasion. Music was thought to reflect the orderliness of the cosmos. Various woodwinds and "brass" instruments were played, as were stringed instruments such as the cithara, and percussion. The cornu, a long tubular metal wind instrument, was used for military signals and on parade. These instruments spread throughout the provinces and are widely depicted in Roman art. The hydraulic pipe organ (hydraulis) was "one of the most significant technical and musical achievements of antiquity", and accompanied gladiator games and events in the amphitheatre. Although certain dances were seen at times as non-Roman or unmanly, dancing was embedded in religious rituals of archaic Rome. Ecstatic dancing was a feature of the mystery religions, particularly the cults of Cybele and Isis. In the secular realm, dancing girls from Syria and Cadiz were extremely popular.