Main articles: Imperial Roman army and Structural history of the Roman military
After the Punic Wars, the Roman army comprised professional soldiers who volunteered for 20 years of active duty and five as reserves. The transition to a professional military began during the late Republic and was one of the many profound shifts away from republicanism, under which an army of conscript citizens defended the homeland against a specific threat. The Romans expanded their war machine by "organizing the communities that they conquered in Italy into a system that generated huge reservoirs of manpower for their army." By Imperial times, military service was a full-time career. The pervasiveness of military garrisons throughout the Empire was a major influence in the process of Romanization.
The primary mission of the military of the early empire was to preserve the Pax Romana. The three major divisions of the military were:
- the garrison at Rome, comprising the Praetorian Guard, the cohortes urbanae and the vigiles, who functioned as police and firefighters;
- the provincial army, comprising the Roman legions and the auxiliaries provided by the provinces (auxilia);
- the navy.
Through his military reforms, which included consolidating or disbanding units of questionable loyalty, Augustus regularized the legion. A legion was organized into ten cohorts, each of which comprised six centuries, with a century further made up of ten squads (contubernia); the exact size of the Imperial legion, which was likely determined by logistics, has been estimated to range from 4,800 to 5,280. After Germanic tribes wiped out three legions in the Battle of the Teutoburg Forest in 9 AD, the number of legions was increased from 25 to around 30. The army had about 300,000 soldiers in the 1st century, and under 400,000 in the 2nd, "significantly smaller" than the collective armed forces of the conquered territories. No more than 2% of adult males living in the Empire served in the Imperial army. Augustus also created the Praetorian Guard: nine cohorts, ostensibly to maintain the public peace, which were garrisoned in Italy. Better paid than the legionaries, the Praetorians served only sixteen years.
The auxilia were recruited from among the non-citizens. Organized in smaller units of roughly cohort strength, they were paid less than the legionaries, and after 25 years of service were rewarded with Roman citizenship, also extended to their sons. According to Tacitus there were roughly as many auxiliaries as there were legionaries---thus, around 125,000 men, implying approximately 250 auxiliary regiments. The Roman cavalry of the earliest Empire were primarily from Celtic, Hispanic or Germanic areas. Several aspects of training and equipment derived from the Celts.
The Roman navy not only aided in the supply and transport of the legions but also in the protection of the frontiers along the rivers Rhine and Danube. Another duty was protecting maritime trade against pirates. It patrolled the Mediterranean, parts of the North Atlantic coasts, and the Black Sea. Nevertheless, the army was considered the senior and more prestigious branch.
An annexed territory became a Roman province in three steps: making a register of cities, taking a census, and surveying the land. Further government recordkeeping included births and deaths, real estate transactions, taxes, and juridical proceedings. In the 1st and 2nd centuries, the central government sent out around 160 officials annually to govern outside Italy. Among these officials were the Roman governors: magistrates elected at Rome who in the name of the Roman people governed senatorial provinces; or governors, usually of equestrian rank, who held their imperium on behalf of the emperor in imperial provinces, most notably Roman Egypt. A governor had to make himself accessible to the people he governed, but he could delegate various duties. His staff, however, was minimal: his official attendants (apparitores), including lictors, heralds, messengers, scribes, and bodyguards; legates, both civil and military, usually of equestrian rank; and friends who accompanied him unofficially.
Other officials were appointed as supervisors of government finances. Separating fiscal responsibility from justice and administration was a reform of the Imperial era, to avoid provincial governors and tax farmers exploiting local populations for personal gain. Equestrian procurators, whose authority was originally "extra-judicial and extra-constitutional," managed both state-owned property and the personal property of the emperor (res privata). Because Roman government officials were few, a provincial who needed help with a legal dispute or criminal case might seek out any Roman perceived to have some official capacity.
Main article: Roman law
Roman courts held original jurisdiction over cases involving Roman citizens throughout the empire, but there were too few judicial functionaries to impose Roman law uniformly in the provinces. Most parts of the Eastern Empire already had well-established law codes and juridical procedures. Generally, it was Roman policy to respect the mos regionis ("regional tradition" or "law of the land") and to regard local laws as a source of legal precedent and social stability. The compatibility of Roman and local law was thought to reflect an underlying ius gentium, the "law of nations" or international law regarded as common and customary. If provincial law conflicted with Roman law or custom, Roman courts heard appeals, and the emperor held final decision-making authority.
In the West, law had been administered on a highly localized or tribal basis, and private property rights may have been a novelty of the Roman era, particularly among Celts. Roman law facilitated the acquisition of wealth by a pro-Roman elite. The extension of universal citizenship to all free inhabitants of the Empire in 212 required the uniform application of Roman law, replacing local law codes that had applied to non-citizens. Diocletian's efforts to stabilize the Empire after the Crisis of the Third Century included two major compilations of law in four years, the Codex Gregorianus and the Codex Hermogenianus, to guide provincial administrators in setting consistent legal standards.
The pervasiveness of Roman law throughout Western Europe enormously influenced the Western legal tradition, reflected by continued use of Latin legal terminology in modern law.
Further information: Taxation in ancient Rome
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.
Main article: Roman economy
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.
See also: Roman currency and Roman finance
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.
Main articles: Mining in ancient Rome and Roman metallurgy
The main mining regions of the Empire were the Iberian Peninsula (gold, silver, copper, tin, lead); Gaul (gold, silver, iron); Britain (mainly iron, lead, tin), the Danubian provinces (gold, iron); Macedonia and Thrace (gold, silver); and Asia Minor (gold, silver, iron, tin). Intensive large-scale mining---of alluvial deposits, and by means of open-cast mining and underground mining---took place from the reign of Augustus up to the early 3rd century, when the instability of the Empire disrupted production.
Hydraulic mining allowed base and precious metals to be extracted on a proto-industrial scale. The total annual iron output is estimated at 82,500 tonnes. Copper and lead production levels were unmatched until the Industrial Revolution. At its peak around the mid-2nd century, the Roman silver stock is estimated at 10,000 t, five to ten times larger than the combined silver mass of medieval Europe and the Caliphate around 800 AD. As an indication of the scale of Roman metal production, lead pollution in the Greenland ice sheet quadrupled over prehistoric levels during the Imperial era and dropped thereafter.
Further information: Cursus publicus
The Empire completely encircled the Mediterranean, which they called "our sea" (mare nostrum). Roman sailing vessels navigated the Mediterranean as well as major rivers. Transport by water was preferred where possible, as moving commodities by land was more difficult. Vehicles, wheels, and ships indicate the existence of a great number of skilled woodworkers.
Land transport utilized the advanced system of Roman roads, called "viae". These roads were primarily built for military purposes, but also served commercial ends. The in-kind taxes paid by communities included the provision of personnel, animals, or vehicles for the cursus publicus, the state mail and transport service established by Augustus. Relay stations were located along the roads every seven to twelve Roman miles, and tended to grow into villages or trading posts. A mansio (plural mansiones) was a privately run service station franchised by the imperial bureaucracy for the cursus publicus. The distance between mansiones was determined by how far a wagon could travel in a day. Carts were usually pulled by mules, travelling about 4 mph.
See also: Roman commerce, Indo-Roman trade relations, and Sino-Roman relations
Roman provinces traded among themselves, but trade extended outside the frontiers to regions as far away as China and India. Chinese trade was mostly conducted overland through middle men along the Silk Road; Indian trade also occurred by sea from Egyptian ports. The main commodity was grain. Also traded were olive oil, foodstuffs, garum (fish sauce), slaves, ore and manufactured metal objects, fibres and textiles, timber, pottery, glassware, marble, papyrus, spices and materia medica, ivory, pearls, and gemstones. Though most provinces could produce wine, regional varietals were desirable and wine was a central trade good.
Inscriptions record 268 different occupations in Rome and 85 in Pompeii. Professional associations or trade guilds (collegia) are attested for a wide range of occupations, some quite specialized.
Work performed by slaves falls into five general categories: domestic, with epitaphs recording at least 55 different household jobs; imperial or public service; urban crafts and services; agriculture; and mining. Convicts provided much of the labour in the mines or quarries, where conditions were notoriously brutal. In practice, there was little division of labour between slave and free, and most workers were illiterate and without special skills. The greatest number of common labourers were employed in agriculture: in Italian industrial farming (latifundia), these may have been mostly slaves, but elsewhere slave farm labour was probably less important.
Textile and clothing production was a major source of employment. Both textiles and finished garments were traded and products were often named for peoples or towns, like a fashion "label". Better ready-to-wear was exported by local businessmen (negotiatores or mercatores). Finished garments might be retailed by their sales agents, by vestiarii (clothing dealers), or peddled by itinerant merchants. The fullers (fullones) and dye workers (coloratores) had their own guilds. Centonarii were guild workers who specialized in textile production and the recycling of old clothes into pieced goods.
Main articles: Ancient Roman architecture, Roman engineering, and Roman technology
The chief Roman contributions to architecture were the arch, vault and dome. Some Roman structures still stand today, due in part to sophisticated methods of making cements and concrete. Roman temples developed Etruscan and Greek forms, with some distinctive elements. Roman roads are considered the most advanced built until the early 19th century. The system of roadways facilitated military policing, communications, and trade, and were resistant to floods and other environmental hazards. Some remained usable for over a thousand years.
Roman bridges were among the first large and lasting bridges, built from stone (and in most cases concrete) with the arch as the basic structure. The largest Roman bridge was Trajan's bridge over the lower Danube, constructed by Apollodorus of Damascus, which remained for over a millennium the longest bridge to have been built. The Romans built many dams and reservoirs for water collection, such as the Subiaco Dams, two of which fed the Anio Novus, one of the largest aqueducts of Rome.
The Romans constructed numerous aqueducts. De aquaeductu, a treatise by Frontinus, who served as water commissioner, reflects the administrative importance placed on the water supply. Masonry channels carried water along a precise gradient, using gravity alone. It was then collected in tanks and fed through pipes to public fountains, baths, toilets, or industrial sites. The main aqueducts in Rome were the Aqua Claudia and the Aqua Marcia. The complex system built to supply Constantinople had its most distant supply drawn from over 120 km away along a route of more than 336 km. Roman aqueducts were built to remarkably fine tolerance, and to a technological standard not equalled until modern times. The Romans also used aqueducts in their extensive mining operations across the empire.
Insulated glazing (or "double glazing") was used in the construction of public baths. Elite housing in cooler climates might have hypocausts, a form of central heating. The Romans were the first culture to assemble all essential components of the much later steam engine: the crank and connecting rod system, Hero's aeolipile (generating steam power), the cylinder and piston (in metal force pumps), non-return valves (in water pumps), and gearing (in water mills and clocks).
Main article: Culture of ancient Rome
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. Similar facilities were constructed in cities throughout the Empire, and some of the best-preserved Roman structures are in Spain, southern France, and northern Africa.
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. It might be located on a working estate, or in a "resort town" on the seacoast.
Augustus' programme of urban renewal, and the growth of Rome's population to as many as one million, was accompanied by nostalgia for rural life. Poetry idealized the lives of farmers and shepherds. Interior decorating often featured painted gardens, fountains, landscapes, vegetative ornament, and animals, rendered accurately enough to be identified by species. On a more practical level, the central government took an active interest in supporting agriculture. Producing food was the priority of land use. Larger farms (latifundia) achieved an economy of scale that sustained urban life. Small farmers benefited from the development of local markets in towns and trade centres. Agricultural techniques such as crop rotation and selective breeding were disseminated throughout the Empire, and new crops were introduced from one province to another.
Maintaining an affordable food supply to the city of Rome had become a major political issue in the late Republic, when the state began to provide a grain dole (Cura Annonae) to citizens who registered for it (about 200,000--250,000 adult males in Rome). The dole cost at least 15% of state revenues, but improved living conditions among the lower classes, and subsidized the rich by allowing workers to spend more of their earnings on the wine and olive oil produced on estates. The grain dole also had symbolic value: it affirmed the emperor's position as universal benefactor, and the right of citizens to share in "the fruits of conquest". The annona, public facilities, and spectacular entertainments mitigated the otherwise dreary living conditions of lower-class Romans, and kept social unrest in check. The satirist Juvenal, however, saw "bread and circuses" (panem et circenses) as emblematic of the loss of republican political liberty:
The public has long since cast off its cares: the people that once bestowed commands, consulships, legions and all else, now meddles no more and longs eagerly for just two things: bread and circuses.
Further information: Disease in Imperial Rome, Antonine plague, and Plague of Cyprian
Epidemics were common in the ancient world, and occasional pandemics in the Empire killed millions. The Roman population was unhealthy. About 20 percent---a large percentage by ancient standards---lived in cities, Rome being the largest. The cities were a "demographic sink": the death rate exceeded the birth rate and constant immigration was necessary to maintain the population. Average lifespan is estimated at the mid-twenties, and perhaps more than half of children died before reaching adulthood. Dense urban populations and poor sanitation contributed to disease. Land and sea connections facilitated and sped the transfer of infectious diseases across the empire's territories. The rich were not immune; only two of emperor Marcus Aurelius's fourteen children are known to have reached adulthood.
The importance of a good diet to health was recognized by medical writers such as Galen (2nd century). Views on nutrition were influenced by beliefs like humoral theory. A good indicator of nutrition and disease burden is average height: the average Roman was shorter in stature than the population of pre-Roman Italian societies and medieval Europe.
Main article: Food and dining in the Roman Empire
See also: Ancient Roman cuisine and Ancient Rome and wine
Most apartments in Rome lacked kitchens, though a charcoal brazier could be used for rudimentary cookery. Prepared food was sold at pubs and bars, inns, and food stalls (tabernae, cauponae, popinae, thermopolia). Carryout and restaurants were for the lower classes; fine dining appeared only at dinner parties in wealthy homes with a chef (archimagirus) and kitchen staff, or banquets hosted by social clubs _(collegia)*.
Most Romans consumed at least 70% of their daily calories in the form of cereals and legumes. Puls (pottage) was considered the food of the Romans, and could be elaborated to produce dishes similar to polenta or risotto. Urban populations and the military preferred bread. By the reign of Aurelian, the state had begun to distribute the _annona_ as a daily ration of bread baked in state factories, and added olive oil, wine, and pork to the dole.
Roman literature focuses on the dining habits of the upper classes, for whom the evening meal (cena) had important social functions. Guests were entertained in a finely decorated dining room (triclinium) furnished with couches. By the late Republic, women dined, reclined, and drank wine along with men. The poet Martial describes a dinner, beginning with the gustatio ("tasting" or "appetizer") salad. The main course was kid, beans, greens, a chicken, and leftover ham, followed by a dessert of fruit and wine. Roman "foodies" indulged in wild game, fowl such as peacock and flamingo, large fish (mullet was especially prized), and shellfish. Luxury ingredients were imported from the far reaches of empire. A book-length collection of Roman recipes is attributed to Apicius, a name for several figures in antiquity that became synonymous with "gourmet."
Refined cuisine could be moralized as a sign of either civilized progress or decadent decline. Most often, because of the importance of landowning in Roman culture, produce---cereals, legumes, vegetables, and fruit---were considered more civilized foods than meat. The Mediterranean staples of bread, wine, and oil were sacralized by Roman Christianity, while Germanic meat consumption became a mark of paganism. Some philosophers and Christians resisted the demands of the body and the pleasures of food, and adopted fasting as an ideal. Food became simpler in general as urban life in the West diminished and trade routes were disrupted; the Church formally discouraged gluttony, and hunting and pastoralism were seen as simple and virtuous.
See also: Ludi, Chariot racing, and Recitationes
When Juvenal complained that the Roman people had exchanged their political liberty for "bread and circuses", he was referring to the state-provided grain dole and the circenses, events held in the entertainment venue called a circus. The largest such venue in Rome was the Circus Maximus, the setting of horse races, chariot races, the equestrian Troy Game, staged beast hunts (venationes), athletic contests, gladiator combat, and historical re-enactments. From earliest times, several religious festivals had featured games (ludi), primarily horse and chariot races _(ludi circenses)_. The races retained religious significance in connection with agriculture, initiation, and the cycle of birth and death.
Under Augustus, public entertainments were presented on 77 days of the year; by the reign of Marcus Aurelius, this had expanded to 135. Circus games were preceded by an elaborate parade (pompa circensis) that ended at the venue. Competitive events were held also in smaller venues such as the amphitheatre, which became the characteristic Roman spectacle venue, and stadium. Greek-style athletics included footraces, boxing, wrestling, and the pancratium. Aquatic displays, such as the mock sea battle (naumachia) and a form of "water ballet", were presented in engineered pools. State-supported theatrical events (ludi scaenici) took place on temple steps or in grand stone theatres, or in the smaller enclosed theatre called an _odeon_.
Circuses were the largest structure regularly built in the Roman world. The Flavian Amphitheatre, better known as the Colosseum, became the regular arena for blood sports in Rome. Many Roman amphitheatres, circuses and theatres built in cities outside Italy are visible as ruins today. The local ruling elite were responsible for sponsoring spectacles and arena events, which both enhanced their status and drained their resources. The physical arrangement of the amphitheatre represented the order of Roman society: the emperor in his opulent box; senators and equestrians in reserved advantageous seats; women seated at a remove from the action; slaves given the worst places, and everybody else in-between. The crowd could call for an outcome by booing or cheering, but the emperor had the final say. Spectacles could quickly become sites of social and political protest, and emperors sometimes had to deploy force to put down crowd unrest, most notoriously at the Nika riots in 532.
The chariot teams were known by the colours they wore. Fan loyalty was fierce and at times erupted into sports riots. Racing was perilous, but charioteers were among the most celebrated and well-compensated athletes. Circuses were designed to ensure that no team had an unfair advantage and to minimize collisions (naufragia), which were nonetheless frequent and satisfying to the crowd. The races retained a magical aura through their early association with chthonic rituals: circus images were considered protective or lucky, curse tablets have been found buried at the site of racetracks, and charioteers were often suspected of sorcery. Chariot racing continued into the Byzantine period under imperial sponsorship, but the decline of cities in the 6th and 7th centuries led to its eventual demise.
The Romans thought gladiator contests had originated with funeral games and sacrifices. Some of the earliest styles of gladiator fighting had ethnic designations such as "Thracian" or "Gallic". The staged combats were considered munera, "services, offerings, benefactions", initially distinct from the festival games (ludi). To mark the opening of the Colosseum, Titus presented 100 days of arena events, with 3,000 gladiators competing on a single day. Roman fascination with gladiators is indicated by how widely they are depicted on mosaics, wall paintings, lamps, and in graffiti. Gladiators were trained combatants who might be slaves, convicts, or free volunteers. Death was not a necessary or even desirable outcome in matches between these highly skilled fighters, whose training was costly and time-consuming. By contrast, noxii were convicts sentenced to the arena with little or no training, often unarmed, and with no expectation of survival; physical suffering and humiliation were considered appropriate retributive justice. These executions were sometimes staged or ritualized as re-enactments of myths, and amphitheatres were equipped with elaborate stage machinery to create special effects.
Modern scholars have found the pleasure Romans took in the "theatre of life and death" difficult to understand. Pliny the Younger rationalized gladiator spectacles as good for the people, "to inspire them to face honourable wounds and despise death, by exhibiting love of glory and desire for victory". Some Romans such as Seneca were critical of the brutal spectacles, but found virtue in the courage and dignity of the defeated fighter---an attitude that finds its fullest expression with the Christians martyred in the arena. Tertullian considered deaths in the arena to be nothing more than a dressed-up form of human sacrifice. Even martyr literature, however, offers "detailed, indeed luxuriant, descriptions of bodily suffering", and became a popular genre at times indistinguishable from fiction.