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The Crisis of the Third Century, also known as the Military Anarchy or the Imperial Crisis (AD 235–284), was a period in which the
Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post-Roman Republic, Republican period of ancient Rome. As a polity, it included large territorial holdings aro ...
nearly collapsed. The crisis ended due to the military victories of
Aurelian Aurelian ( la, Lucius Domitius Aurelianus; 9 September 214 October 275) was a Roman emperor, who reigned during the Crisis of the Third Century, from 270 to 275. As emperor, he won an unprecedented series of military victories which reunited ...
and with the ascension of
Diocletian Diocletian (; la, Gaius Aurelius Valerius Diocletianus, grc, Διοκλητιανός, Diokletianós; c. 242/245 – 311/312), nicknamed ''Iovius'', was Roman emperor from 284 until his abdication in 305. He was born Gaius Valerius Diocles ...
and his implementation of reforms in 284, including the
Tetrarchy The Tetrarchy was the system instituted by Roman emperor Diocletian in 293 AD to govern the ancient Roman Empire by dividing it between two emperors, the ''augusti'', and their juniors colleagues and designated successors, the '' caesares'' ...
. The crisis began in 235 with the
assassination Assassination is the murder of a prominent or important person, such as a head of state, head of government, politician, world leader, member of a royal family or CEO. The murder of a celebrity, activist, or artist, though they may not have ...
of Emperor
Severus Alexander Marcus Aurelius Severus Alexander (1 October 208 – 21/22 March 235) was a Roman emperor, who reigned from 222 until 235. He was the last emperor from the Severan dynasty. He succeeded his slain cousin Elagabalus in 222. Alexander himself wa ...
by his own troops. During the following 50-year period, the Empire saw the combined pressures of
barbarian A barbarian (or savage) is someone who is perceived to be either uncivilized or primitive. The designation is usually applied as a generalization based on a popular stereotype; barbarians can be members of any nation judged by some to be less ...
invasion An invasion is a military offensive in which large numbers of combatants of one geopolitical entity aggressively enter territory owned by another such entity, generally with the objective of either: conquering; liberating or re-establishing ...
s and
migration Migration, migratory, or migrate may refer to: Human migration * Human migration, physical movement by humans from one region to another ** International migration, when peoples cross state boundaries and stay in the host state for some minimum le ...
s into the Roman territory,
civil war A civil war or intrastate war is a war between organized groups within the same state (or country). The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government polici ...
s, peasant rebellions and political instability, with multiple usurpers competing for power. This led to the debasement of
currency A currency, "in circulation", from la, currens, -entis, literally meaning "running" or "traversing" is a standardization of money in any form, in use or circulation as a medium of exchange, for example banknotes and coins. A more general ...
and
economic collapse Economic collapse, also called economic meltdown, is any of a broad range of bad economic conditions, ranging from a severe, prolonged depression with high bankruptcy rates and high unemployment (such as the Great Depression of the 1930s), to a ...
, with the
Plague of Cyprian The Plague of Cyprian was a pandemic that afflicted the Roman Empire from about AD 249 to 262. The plague is thought to have caused widespread manpower shortages for food production and the Roman army, severely weakening the empire during the Crisi ...
contributing to the disorder. Roman troops became more reliant over time on the growing influence of the barbarian mercenaries known as
foederati ''Foederati'' (, singular: ''foederatus'' ) were peoples and cities bound by a treaty, known as ''foedus'', with Rome. During the Roman Republic, the term identified the ''socii'', but during the Roman Empire, it was used to describe foreign stat ...
. Roman commanders in the field, although nominally working for Rome, became increasingly independent. By 268, the empire had split into three competing states: the
Gallic Empire The Gallic Empire or the Gallic Roman Empire are names used in modern historiography for a breakaway part of the Roman Empire that functioned ''de facto'' as a separate state from 260 to 274. It originated during the Crisis of the Third Century, ...
(including the
Roman province The Roman provinces (Latin: ''provincia'', pl. ''provinciae'') were the administrative regions of Ancient Rome outside Roman Italy that were controlled by the Romans under the Roman Republic and later the Roman Empire. Each province was rule ...
s of
Gaul Gaul ( la, Gallia) was a region of Western Europe first described by the Romans. It was inhabited by Celtic and Aquitani tribes, encompassing present-day France, Belgium, Luxembourg, most of Switzerland, parts of Northern Italy (only during ...
,
Britannia Britannia () is the national personification of Britain as a helmeted female warrior holding a trident and shield. An image first used in classical antiquity, the Latin ''Britannia'' was the name variously applied to the British Isles, Grea ...
and, briefly,
Hispania Hispania ( la, Hispānia , ; nearly identically pronounced in Spanish, Portuguese, Catalan, and Italian) was the Roman name for the Iberian Peninsula and its provinces. Under the Roman Republic, Hispania was divided into two provinces: Hi ...
); the Palmyrene Empire (including the eastern provinces of
Syria Palaestina Syria Palaestina (literally, "Palestinian Syria";Trevor Bryce, 2009, ''The Routledge Handbook of the Peoples and Places of Ancient Western Asia''Roland de Vaux, 1978, ''The Early History of Israel'', Page 2: "After the revolt of Bar Cochba in 135 ...
and
Aegyptus In Greek mythology, Aegyptus or Ægyptus (; grc, Αἴγυπτος) was a legendary king of ancient Egypt. He was a descendant of the princess Io through his father Belus, and of the river-god Nilus as both the father of Achiroe, his mother ...
); and, between them, the Italian-centered Roman Empire proper. There were at least 26 claimants to the title of emperor, mostly prominent
Roman army The Roman army (Latin: ) was the armed forces deployed by the Romans throughout the duration of Ancient Rome, from the Roman Kingdom (c. 500 BC) to the Roman Republic (500–31 BC) and the Roman Empire (31 BC–395 AD), and its medieval contin ...
general A general officer is an officer of high rank in the armies, and in some nations' air forces, space forces, and marines or naval infantry. In some usages the term "general officer" refers to a rank above colonel."general, adj. and n.". O ...
s, who assumed imperial power over all or part of the Empire. The same number of men became accepted by the
Roman Senate The Roman Senate ( la, Senātus Rōmānus) was a governing and advisory assembly in ancient Rome. It was one of the most enduring institutions in Roman history, being established in the first days of the city of Rome (traditionally founded in ...
as emperor during this period and so became legitimate emperors. Later,
Aurelian Aurelian ( la, Lucius Domitius Aurelianus; 9 September 214 October 275) was a Roman emperor, who reigned during the Crisis of the Third Century, from 270 to 275. As emperor, he won an unprecedented series of military victories which reunited ...
(AD 270–275) reunited the empire militarily. The crisis ended with
Diocletian Diocletian (; la, Gaius Aurelius Valerius Diocletianus, grc, Διοκλητιανός, Diokletianós; c. 242/245 – 311/312), nicknamed ''Iovius'', was Roman emperor from 284 until his abdication in 305. He was born Gaius Valerius Diocles ...
and his restructuring of Roman imperial government in 284. This helped to stabilize the Empire economically and militarily for a further 150 years. The crisis resulted in such profound changes in the empire's institutions, society, economic life, and
religion Religion is usually defined as a social- cultural system of designated behaviors and practices, morals, beliefs, worldviews, texts, sanctified places, prophecies, ethics, or organizations, that generally relates humanity to supernatur ...
that it is increasingly seen by most historians as defining the transition between the
historical periods Human history, also called world history, is the narrative of humanity's past. It is understood and studied through anthropology, archaeology, genetics, and linguistics. Since the invention of writing, human history has been studied through ...
of
classical antiquity Classical antiquity (also the classical era, classical period or classical age) is the period of cultural history between the 8th century BC and the 5th century AD centred on the Mediterranean Sea, comprising the interlocking civilizations of ...
and
late antiquity Late antiquity is the time of transition from classical antiquity to the Middle Ages, generally spanning the 3rd–7th century in Europe and adjacent areas bordering the Mediterranean Basin. The popularization of this periodization in English h ...
.


History

After the Roman Empire had been stabilized, once again, after the turmoil of the Year of the Five Emperors (193) in the reign of
Septimius Severus Lucius Septimius Severus (; 11 April 145 – 4 February 211) was Roman emperor from 193 to 211. He was born in Leptis Magna (present-day Al-Khums, Libya) in the Roman province of Africa. As a young man he advanced through the customary suc ...
, the later Severan dynasty lost more and more control. The army required larger and larger bribes to remain loyal. Septimius Severus raised the pay of legionaries, and gave substantial '' donativum'' to the troops. The large and ongoing increase in military expenditure caused problems for all of his successors. R.J. van der Spek, Lukas De Blois (2008)
''An Introduction to the Ancient World'', p. 272
,
Routledge Routledge () is a British multinational publisher. It was founded in 1836 by George Routledge, and specialises in providing academic books, journals and online resources in the fields of the humanities, behavioural science, education, law ...
His son
Caracalla Marcus Aurelius Antoninus (born Lucius Septimius Bassianus, 4 April 188 – 8 April 217), better known by his nickname "Caracalla" () was Roman emperor from 198 to 217. He was a member of the Severan dynasty, the elder son of Emperor ...
raised the annual pay and lavished many benefits on the army in accordance with the advice of his father to keep their loyalty, and considered dividing the Empire into eastern and western sectors with his brother Geta to reduce the conflict in their co-rule. But with the major influence of their mother, Julia Domna, this division of the empire was not possible. Instead of warring in foreign lands, the Roman empire was increasingly put on the defensive by marauding enemies and civil wars. This cut off the essential source of income gained from plundering enemy countries, while opening up the Roman countryside to economic devastation from looters both foreign and domestic. Frequent civil wars contributed to depletion of the army's manpower, and drafting replacement soldiers strained the labour force further. Fighting on multiple fronts, increasing size and pay of the army, increasing cost of transport, populist "
bread and circuses "Bread and circuses" (or bread and games; from Latin: ''panem et circenses'') is a metonymic phrase referring to superficial appeasement. It is attributed to Juvenal, a Roman poet active in the late first and early second century CE, and is used ...
" political campaigns, inefficient and corrupt tax collection, unorganised budgeting, and paying off foreign nations for peace all contributed to financial crisis. The emperors responded by confiscating assets and supplies to combat the deficit. The situation of the Roman Empire became dire in 235. Many
Roman legion The Roman legion ( la, legiō, ) was the largest military unit of the Roman army, composed of 5,200 infantry and 300 equites (cavalry) in the period of the Roman Republic (509 BC–27 BC) and of 5,600 infantry and 200 auxilia in the period o ...
s had been defeated during a previous campaign against
Germanic peoples The Germanic peoples were historical groups of people that once occupied Central Europe and Scandinavia during antiquity and into the early Middle Ages. Since the 19th century, they have traditionally been defined by the use of ancient and ear ...
raiding across the borders, while the emperor
Severus Alexander Marcus Aurelius Severus Alexander (1 October 208 – 21/22 March 235) was a Roman emperor, who reigned from 222 until 235. He was the last emperor from the Severan dynasty. He succeeded his slain cousin Elagabalus in 222. Alexander himself wa ...
had been focused primarily on the dangers from the
Sassanid Empire The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the History of Iran, last Iranian empire before the early Muslim conquests of the 7th-8th cen ...
. Leading his troops personally, the emperor resorted to diplomacy and accepting tribute to pacify the
Germanic chieftain Germanic may refer to: * Germanic peoples, an ethno-linguistic group identified by their use of the Germanic languages ** List of ancient Germanic peoples and tribes * Germanic languages :* Proto-Germanic language, a reconstructed proto-language o ...
s quickly, rather than military conquest. According to Herodian this cost Severus Alexander the respect of his troops, who may have felt that more severe punishment was required for the tribes that had intruded on Rome's territory. The troops assassinated Severus Alexander and proclaimed the new emperor to be
Maximinus Thrax Gaius Julius Verus Maximinus "Thrax" ("the Thracian";  – 238) was Roman emperor from 235 to 238. His father was an accountant in the governor's office and sprang from ancestors who were Carpi (a Dacian tribe), a people whom Diocleti ...
, commander of one of the legions present. Maximinus was the first of the
barracks emperor A barracks emperor (also called a "soldier emperor") was a Roman emperor who seized power by virtue of his command of the army. Barracks emperors were especially common in the period from 235 through 284 AD, during the Crisis of the Third Centur ...
s – rulers who were elevated by the troops without having any political experience, a supporting faction, distinguished ancestors, or a hereditary claim to the imperial throne. As their rule rested on military might and generalship, they operated as
warlord A warlord is a person who exercises military, economic, and political control over a region in a country without a strong national government; largely because of coercive control over the armed forces. Warlords have existed throughout much of h ...
s reliant on the army to maintain power. Maximinus continued the campaigns in
Germania Germania ( ; ), also called Magna Germania (English: ''Great Germania''), Germania Libera (English: ''Free Germania''), or Germanic Barbaricum to distinguish it from the Roman province of the same name, was a large historical region in north-c ...
but struggled to exert his authority over the whole empire. The Senate was displeased at having to accept a peasant as Emperor. This precipitated the chaotic Year of the Six Emperors during which all of the original claimants were killed: in 238 a revolt broke out in Africa led by Gordian I and Gordian II, which was soon supported by the
Roman Senate The Roman Senate ( la, Senātus Rōmānus) was a governing and advisory assembly in ancient Rome. It was one of the most enduring institutions in Roman history, being established in the first days of the city of Rome (traditionally founded in ...
, but this was quickly defeated with Gordian II killed and Gordian I committing suicide. The Senate, fearing Imperial wrath, raised two of their own as co-Emperors, Pupienus and Balbinus with Gordian I's grandson Gordian III as ''Caesar''. Maximinus marched on Rome but was assassinated by his
Legio II Parthica Legio II Parthica ("Parthian-conquering Second Legion") was a legion of the Imperial Roman army founded in AD 197 by the emperor Septimius Severus (r. 193–211), for his campaign against the Parthian Empire, hence the '' cognomen'' ''Parthica'' ...
, and subsequently Pupienus and Balbinus were murdered by the
Praetorian Guard The Praetorian Guard (Latin: ''cohortēs praetōriae'') was a unit of the Imperial Roman army that served as personal bodyguards and intelligence agents for the Roman emperors. During the Roman Republic, the Praetorian Guard were an escort fo ...
. In the following years, numerous generals of the Roman army fought each other for control of the empire and neglected their duties of defending it from invasion. There were frequent raids across the Rhine and Danube frontier by foreign tribes, including the Carpians,
Goths The Goths ( got, 𐌲𐌿𐍄𐌸𐌹𐌿𐌳𐌰, translit=''Gutþiuda''; la, Gothi, grc-gre, Γότθοι, Gótthoi) were a Germanic people who played a major role in the fall of the Western Roman Empire and the emergence of medieval Euro ...
,
Vandals The Vandals were a Germanic peoples, Germanic people who first inhabited what is now southern Poland. They established Vandal Kingdom, Vandal kingdoms on the Iberian Peninsula, Mediterranean islands, and North Africa in the fifth century. The ...
, and
Alamanni The Alemanni or Alamanni, were a confederation of Germanic tribes * * * on the Upper Rhine River. First mentioned by Cassius Dio in the context of the campaign of Caracalla of 213, the Alemanni captured the in 260, and later expanded into pre ...
, and attacks from Sassanids in the east. Climate changes and a
sea level rise Globally, sea levels are rising due to human-caused climate change. Between 1901 and 2018, the globally averaged sea level rose by , or 1–2 mm per year on average.IPCC, 2019Summary for Policymakers InIPCC Special Report on the Ocean and Cr ...
disrupted the agriculture of what is now the
Low Countries The term Low Countries, also known as the Low Lands ( nl, de Lage Landen, french: les Pays-Bas, lb, déi Niddereg Lännereien) and historically called the Netherlands ( nl, de Nederlanden), Flanders, or Belgica, is a coastal lowland region in N ...
, forcing tribes residing in the region to migrate into Roman lands. Further disruption arose in 251, when the
Plague of Cyprian The Plague of Cyprian was a pandemic that afflicted the Roman Empire from about AD 249 to 262. The plague is thought to have caused widespread manpower shortages for food production and the Roman army, severely weakening the empire during the Crisi ...
(possibly
smallpox Smallpox was an infectious disease caused by variola virus (often called smallpox virus) which belongs to the genus Orthopoxvirus. The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) c ...
) broke out. This plague caused large-scale death, severely weakening the empire. The situation was worsened in 260 when the emperor Valerian was captured in battle by the Sassanids (he later died in captivity). Throughout the period, numerous
usurper A usurper is an illegitimate or controversial claimant to power, often but not always in a monarchy. In other words, one who takes the power of a country, city, or established region for oneself, without any formal or legal right to claim it as ...
s claimed the imperial throne. In the absence of a strong central authority, the empire broke into three competing states. The
Roman province The Roman provinces (Latin: ''provincia'', pl. ''provinciae'') were the administrative regions of Ancient Rome outside Roman Italy that were controlled by the Romans under the Roman Republic and later the Roman Empire. Each province was rule ...
s of
Gaul Gaul ( la, Gallia) was a region of Western Europe first described by the Romans. It was inhabited by Celtic and Aquitani tribes, encompassing present-day France, Belgium, Luxembourg, most of Switzerland, parts of Northern Italy (only during ...
, Britain, and
Hispania Hispania ( la, Hispānia , ; nearly identically pronounced in Spanish, Portuguese, Catalan, and Italian) was the Roman name for the Iberian Peninsula and its provinces. Under the Roman Republic, Hispania was divided into two provinces: Hi ...
broke off to form the
Gallic Empire The Gallic Empire or the Gallic Roman Empire are names used in modern historiography for a breakaway part of the Roman Empire that functioned ''de facto'' as a separate state from 260 to 274. It originated during the Crisis of the Third Century, ...
in 260. The eastern provinces of
Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
, Palestine, and
Aegyptus In Greek mythology, Aegyptus or Ægyptus (; grc, Αἴγυπτος) was a legendary king of ancient Egypt. He was a descendant of the princess Io through his father Belus, and of the river-god Nilus as both the father of Achiroe, his mother ...
also became independent as the Palmyrene Empire in 267. The remaining provinces, centered on Italy, stayed under a single ruler but now faced threats on every side. An invasion of Macedonia and Greece by
Goths The Goths ( got, 𐌲𐌿𐍄𐌸𐌹𐌿𐌳𐌰, translit=''Gutþiuda''; la, Gothi, grc-gre, Γότθοι, Gótthoi) were a Germanic people who played a major role in the fall of the Western Roman Empire and the emergence of medieval Euro ...
, who had been displaced from their lands on the
Black Sea The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, Rom ...
, was defeated by emperor Claudius II Gothicus at the Battle of Naissus in 268 or 269. Historians see this victory as the turning point of the crisis. In its aftermath, a series of tough, energetic barracks emperors were able to reassert central authority. Further victories by Claudius Gothicus drove back the
Alamanni The Alemanni or Alamanni, were a confederation of Germanic tribes * * * on the Upper Rhine River. First mentioned by Cassius Dio in the context of the campaign of Caracalla of 213, the Alemanni captured the in 260, and later expanded into pre ...
and recovered Hispania from the Gallic Empire. He died of the plague in 270 and was succeeded by
Aurelian Aurelian ( la, Lucius Domitius Aurelianus; 9 September 214 October 275) was a Roman emperor, who reigned during the Crisis of the Third Century, from 270 to 275. As emperor, he won an unprecedented series of military victories which reunited ...
, who had commanded the cavalry at Naissus. Aurelian reigned (270–275) through the worst of the crisis, gradually restoring the empire. He defeated the Vandals,
Visigoths The Visigoths (; la, Visigothi, Wisigothi, Vesi, Visi, Wesi, Wisi) were an early Germanic people who, along with the Ostrogoths, constituted the two major political entities of the Goths within the Roman Empire in late antiquity, or what is k ...
, Palmyrene Empire, and finally the remainder of the Gallic Empire. By late 274, the Roman Empire had been reunited into a single entity. However, Aurelian was assassinated in 275, sparking a further series of competing emperors with short reigns. The situation did not stabilize until
Diocletian Diocletian (; la, Gaius Aurelius Valerius Diocletianus, grc, Διοκλητιανός, Diokletianós; c. 242/245 – 311/312), nicknamed ''Iovius'', was Roman emperor from 284 until his abdication in 305. He was born Gaius Valerius Diocles ...
, himself a barracks emperor, took power in 284. More than a century would pass before Rome again lost military ascendancy over its external enemies. However, dozens of formerly thriving cities, especially in the Western Empire, had been ruined. Their populations dead or dispersed, these cities could not be rebuilt, due to the economic breakdown caused by constant warfare. The economy was also crippled by the breakdown in trading networks and the debasement of the currency. Major cities and towns, including Rome itself, had not needed fortifications for many centuries, but now surrounded themselves with thick walls. Fundamental problems with the empire still remained. The right of imperial succession had never been clearly defined, which was a factor in the continuous civil wars as competing factions in the military, Senate, and other parties put forward their favored candidate for emperor. The sheer size of the empire, which had been an issue since the late
Roman Republic The Roman Republic ( la, Res publica Romana ) was a form of government of Rome and the era of the classical Roman civilization when it was run through public representation of the Roman people. Beginning with the overthrow of the Roman Ki ...
three centuries earlier, continued to make it difficult for a single ruler to effectively counter multiple threats at the same time. These continuing problems were addressed by the radical reforms of Diocletian, who broke the cycle of usurpation. He began by sharing his rule with a colleague, then formally established the
Tetrarchy The Tetrarchy was the system instituted by Roman emperor Diocletian in 293 AD to govern the ancient Roman Empire by dividing it between two emperors, the ''augusti'', and their juniors colleagues and designated successors, the '' caesares'' ...
of four co-emperors in 293. Historians regard this as the end of the crisis period, which had lasted 58 years. However the trend of civil war would continue after the abdication of Diocletian in the Civil wars of the Tetrarchy (306–324) until the rise of
Constantine the Great Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to convert to Christianity. Born in Naissus, Dacia Mediterran ...
as sole Emperor. The empire survived until 476 in the West and until 1453 in the East.


Causes


The problem of succession and civil war

From the beginning of the
Principate The Principate is the name sometimes given to the first period of the Roman Empire from the beginning of the reign of Augustus in 27 BC to the end of the Crisis of the Third Century in AD 284, after which it evolved into the so-called Dominate. ...
there were no clear rules for the imperial succession, largely because the empire maintained the facade of a republic. During the early Principate, the process for becoming an emperor relied on a combination of proclamation by the Senate, popular approval, and acceptance by the army, in particular the
Praetorian Guard The Praetorian Guard (Latin: ''cohortēs praetōriae'') was a unit of the Imperial Roman army that served as personal bodyguards and intelligence agents for the Roman emperors. During the Roman Republic, the Praetorian Guard were an escort fo ...
. A family connection to a previous emperor was beneficial, but it did not determine the issue in the way a formal system of hereditary succession would. From the
Julio-Claudian dynasty , native_name_lang=Latin, coat of arms=Great_Cameo_of_France-removebg.png, image_size=260px, caption= The Great Cameo of France depicting emperors Augustus, Tiberius, Claudius and Nero, type= Ancient Roman dynasty, country= Roman Empire, estates=* ...
onwards there was sometimes tension between the Senate's preferred choice and the army. As the Senatorial class declined in political influence and more generals were recruited from the provinces this tension increased. Whenever the succession appeared uncertain, there was an incentive for any general with support of a sizable army to attempt to seize power, sparking civil war. The most recent example of this prior to the Crisis was the Year of the Five Emperors which resulted in the victory of
Septimius Severus Lucius Septimius Severus (; 11 April 145 – 4 February 211) was Roman emperor from 193 to 211. He was born in Leptis Magna (present-day Al-Khums, Libya) in the Roman province of Africa. As a young man he advanced through the customary suc ...
. After the overthrow of the Severan dynasty, for the rest of the 3rd century, Rome was ruled by a series of generals, coming into power through frequent civil wars which devastated the empire.


Natural disasters

The first and most immediately disastrous of the natural disasters that the Roman Empire faced during the Third Century was the plague. The Antonine Plague that preceded the Crisis of the Third Century sapped manpower from Roman armies and proved disastrous for the
Roman economy The study of the Roman economy, which is, the economies of the ancient city-state of Rome and its empire during the Republican and Imperial periods remains highly speculative. There are no surviving records of business and government accounts, suc ...
. From AD 249 to AD 262, the
Plague of Cyprian The Plague of Cyprian was a pandemic that afflicted the Roman Empire from about AD 249 to 262. The plague is thought to have caused widespread manpower shortages for food production and the Roman army, severely weakening the empire during the Crisi ...
devastated the Roman Empire so much so that some cities, such as the city of Alexandria, experienced a 62% decline in population. These plagues greatly hindered the Roman Empire's ability to ward off barbarian invasions but also factored into problems such as
famine A famine is a widespread scarcity of food, caused by several factors including war, natural disasters, crop failure, population imbalance, widespread poverty, an economic catastrophe or government policies. This phenomenon is usually accompan ...
, with many farms becoming abandoned and unproductive. A second and longer-term natural disaster that took place during the third century was the increased variability of weather. Drier summers meant less agricultural productivity and more extreme weather events led to agricultural instability. This could also have contributed to the increased barbarian pressure on Roman borders, as they too would have experienced the detrimental effects of climate change and sought to push inward to more productive regions of the Mediterranean.


Foreign invasions

Barbarian invasions came in the wake of civil war, plague, and famine. Distress caused in part by the changing climate led various barbarian tribes to push into Roman territory. Other tribes coalesced into more formidable entities (notably the
Alamanni The Alemanni or Alamanni, were a confederation of Germanic tribes * * * on the Upper Rhine River. First mentioned by Cassius Dio in the context of the campaign of Caracalla of 213, the Alemanni captured the in 260, and later expanded into pre ...
and
Franks The Franks ( la, Franci or ) were a group of Germanic peoples whose name was first mentioned in 3rd-century Roman sources, and associated with tribes between the Lower Rhine and the Ems River, on the edge of the Roman Empire.H. Schutz: Tools ...
), or were pushed out of their former territories by more dangerous peoples such as the
Sarmatians The Sarmatians (; grc, Σαρμαται, Sarmatai; Latin: ) were a large confederation of ancient Eastern Iranian equestrian nomadic peoples of classical antiquity who dominated the Pontic steppe from about the 3rd century BC to the 4th cen ...
(the
Huns The Huns were a nomadic people who lived in Central Asia, the Caucasus, and Eastern Europe between the 4th and 6th century AD. According to European tradition, they were first reported living east of the Volga River, in an area that was part ...
did not appear west of the Volga for another century). Eventually, the frontiers were stabilized by the Illyrian Emperors. However, barbarian migrations into the empire continued in greater and greater numbers. Though these migrants were initially closely monitored and assimilated, later tribes eventually entered the Roman Empire ''en masse'' with their weapons, giving only token recognition of Roman authority. The defensive battles that Rome had to endure on the Danube since the 230s, however, paled in comparison to the threat the empire faced in the East. There,
Sassanid Persia The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the last Iranian empire before the early Muslim conquests of the 7th-8th centuries AD. Named ...
represented a far greater danger to Rome than the isolated attacks of Germanic tribes. The Sassanids had in 224 and 226 overthrown the Parthian Arsacids, and the Persian King
Ardashir I Ardashir I (Middle Persian: 𐭠𐭥𐭲𐭧𐭱𐭲𐭥, Modern Persian: , '), also known as Ardashir the Unifier (180–242 AD), was the founder of the Sasanian Empire. He was also Ardashir V of the Kings of Persis, until he founded the new ...
, who also wanted to prove his legitimacy through military successes, had already penetrated into Roman territory at the time of
Severus Alexander Marcus Aurelius Severus Alexander (1 October 208 – 21/22 March 235) was a Roman emperor, who reigned from 222 until 235. He was the last emperor from the Severan dynasty. He succeeded his slain cousin Elagabalus in 222. Alexander himself wa ...
, probably taking the strategically important cities of
Nisibis Nusaybin (; '; ar, نُصَيْبِيْن, translit=Nuṣaybīn; syr, ܢܨܝܒܝܢ, translit=Nṣībīn), historically known as Nisibis () or Nesbin, is a city in Mardin Province, Turkey. The population of the city is 83,832 as of 2009 and is ...
and Carrhae in 235/236.


Economic impact

Internally, the empire faced
hyperinflation In economics, hyperinflation is a very high and typically accelerating inflation. It quickly erodes the real value of the local currency, as the prices of all goods increase. This causes people to minimize their holdings in that currency as t ...
caused by years of coinage
devaluation In macroeconomics and modern monetary policy, a devaluation is an official lowering of the value of a country's currency within a fixed exchange-rate system, in which a monetary authority formally sets a lower exchange rate of the national curre ...
. This had started earlier under the Severan emperors who enlarged the army by one quarter, and doubled the base pay of legionaries. As each of the short-lived emperors took power, they needed ways to raise money quickly to pay the military's "accession bonus" and the easiest way to do so was by inflating the coinage severely, a process made possible by debasing the coinage with bronze and copper. This resulted in runaway rises in prices, and by the time Diocletian came to power, the old coinage of the Roman Empire had nearly collapsed. Some taxes were collected in kind and values often were notional, in
bullion Bullion is non-ferrous metal that has been refined to a high standard of elemental purity. The term is ordinarily applied to bulk metal used in the production of coins and especially to precious metals such as gold and silver. It comes fro ...
or
bronze Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals, such as phosphorus, or metalloids suc ...
coinage. Real values continued to be figured in gold coinage, but the silver coin, the denarius, used for 300 years, was gone (1 pound of gold = 40 gold
aurei The ''aureus'' ( ''aurei'', 'golden', used as a noun) was a gold coin of ancient Rome originally valued at 25 pure silver ''denarii'' (sin. denarius). The ''aureus'' was regularly issued from the 1st century BC to the beginning of the 4th cen ...
= 1,000
denarii The denarius (, dēnāriī ) was the standard Roman silver coin from its introduction in the Second Punic War to the reign of Gordian III (AD 238–244), when it was gradually replaced by the antoninianus. It continued to be minted in very ...
= 4,000 sestertii). This currency had almost no value by the end of the third century, and trade was carried out without retail coinage.


Breakdown of internal trade network

One of the most profound and lasting effects of the Crisis of the Third Century was the disruption of Rome's extensive internal trade network. Ever since the
Pax Romana The Pax Romana (Latin for 'Roman peace') is a roughly 200-year-long timespan of Roman history which is identified as a period and as a golden age of increased as well as sustained Roman imperialism, relative peace and order, prosperous stabilit ...
, starting with
Augustus Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian, was the first Roman emperor; he reigned from 27 BC until his death in AD 14. He is known for being the founder of the Roman Pr ...
, the empire's economy had depended in large part on trade between Mediterranean ports and across the extensive road systems to the Empire's interior. Merchants could travel from one end of the empire to the other in relative safety within a few weeks, moving agricultural goods produced in the provinces to the cities, and manufactured goods produced by the great cities of the East to the more rural provinces. Large estates produced cash crops for export and used the resulting revenues to import food and urban manufactured goods. This resulted in a great deal of economic interdependence among the empire's inhabitants. The historian Henry St. Lawrence Beaufort Moss describes the situation as it stood before the crisis: With the onset of the Crisis of the Third Century, however, this vast internal trade network broke down. The widespread civil unrest made it no longer safe for merchants to travel as they once had, and the financial crisis that struck made exchange very difficult with the debased currency. This produced profound changes that, in many ways, foreshadowed the very decentralized economic character of the coming
Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...
. Large landowners, no longer able to successfully export their crops over long distances, began producing food for subsistence and local barter. Rather than import manufactured goods from the empire's great urban areas, they began to manufacture many goods locally, often on their own estates, thus beginning the self-sufficient "house economy" that would become commonplace in later centuries, reaching its final form in the
manorialism Manorialism, also known as the manor system or manorial system, was the method of land ownership (or " tenure") in parts of Europe, notably France and later England, during the Middle Ages. Its defining features included a large, sometimes for ...
of the Middle Ages. The common, free people of the Roman cities, meanwhile, began to move out into the countryside in search of food and better protection. Made desperate by economic necessity, many of these former city dwellers, as well as many small farmers, were forced to give up hard-earned basic civil rights in order to receive protection from large land-holders. In doing so, they became a half-free class of Roman citizen known as '' coloni''. They were tied to the land, and in later Imperial law, their status was made hereditary. This provided an early model for
serfdom Serfdom was the status of many peasants under feudalism, specifically relating to manorialism, and similar systems. It was a condition of debt bondage and indentured servitude with similarities to and differences from slavery, which develop ...
, the origins of medieval
feudal society Feudalism, also known as the feudal system, was the combination of the legal, economic, military, cultural and political customs that flourished in medieval Europe between the 9th and 15th centuries. Broadly defined, it was a way of structu ...
and of the medieval peasantry. The decline in commerce between the imperial provinces put them on a path toward increased self-sufficiency. Large landowners, who had become more self-sufficient, became less mindful of Rome's central authority, particularly in the Western Empire, and were downright hostile toward its tax collectors. The measure of wealth at this time began to have less to do with wielding urban civil authority and more to do with controlling large agricultural estates in rural regions since this guaranteed access to the only economic resource of real value – agricultural land and the crops it produced. The common people of the empire lost economic and political status to the land-holding nobility, and the commercial middle classes waned along with their trade-derived livelihoods. The Crisis of the Third Century thus marked the beginning of a long gradual process that would transform the ancient world of classical antiquity into the medieval one of the
Early Middle Ages The Early Middle Ages (or early medieval period), sometimes controversially referred to as the Dark Ages, is typically regarded by historians as lasting from the late 5th or early 6th century to the 10th century. They marked the start of the Mi ...
. However, although the burdens on the population increased, especially the lower strata of the population, this can not be generalized to the whole empire, especially since the living conditions were not uniform. Although the structural integrity of the economy suffered from the military conflicts of that time and the inflationary episode of the 270s, it did not collapse, especially because of the complex regional differences. Recent research has shown that there were regions that prospered even further, such as Egypt, Africa and Hispania. But even for Asia Minor, which was directly affected by attacks, no general decline can be observed. While commerce and the economy flourished in several regions, with several provinces not affected by hostilities, other provinces experienced some serious problems, as evidenced by personal hoards in the northwestern provinces of the empire. However, there can be no talk of a general economic crisis throughout the whole of Empire. Even the Roman cities began to change in character. The large cities of classical antiquity slowly gave way to the smaller,
walled cities A defensive wall is a fortification usually used to protect a city, town or other settlement from potential aggressors. The walls can range from simple palisades or earthworks to extensive military fortifications with towers, bastions and gates ...
that became common in the Middle Ages. These changes were not restricted to the third century, but took place slowly over a long period, and were punctuated with many temporary reversals. In spite of extensive reforms by later emperors, however, the Roman trade network was never able to fully recover to what it had been during the
Pax Romana The Pax Romana (Latin for 'Roman peace') is a roughly 200-year-long timespan of Roman history which is identified as a period and as a golden age of increased as well as sustained Roman imperialism, relative peace and order, prosperous stabilit ...
(27 BC – AD 180). This economic decline was far more noticeable and important in the western part of the empire, which was also invaded by barbarian tribes several times during the century. Hence, the balance of power clearly shifted eastward during this period, as evidenced by the choice of Diocletian to rule from
Nicomedia Nicomedia (; el, Νικομήδεια, ''Nikomedeia''; modern İzmit) was an ancient Greek city located in what is now Turkey. In 286, Nicomedia became the eastern and most senior capital city of the Roman Empire (chosen by the emperor Diocle ...
in
Asia Minor Anatolia, tr, Anadolu Yarımadası), and the Anatolian plateau, also known as Asia Minor, is a large peninsula in Western Asia and the westernmost protrusion of the Asian continent. It constitutes the major part of modern-day Turkey. The re ...
, putting his second in command,
Maximian Maximian ( la, Marcus Aurelius Valerius Maximianus; c. 250 – c. July 310), nicknamed ''Herculius'', was Roman emperor from 286 to 305. He was '' Caesar'' from 285 to 286, then ''Augustus'' from 286 to 305. He shared the latter title with his ...
, in
Milan Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city ...
. This would have a considerable impact on the later development of the empire with a richer, more stable
eastern empire The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...
surviving the end of Roman rule in the west. While imperial revenues fell, imperial expenses rose sharply. More soldiers, greater proportions of cavalry, and the ruinous expense of walling in cities all added to the toll. Goods and services previously paid for by the government were now demanded in addition to monetary taxes. The empire suffered from a crippling labour shortage. The steady exodus of both rich and poor from the cities and now-unprofitable professions forced
Diocletian Diocletian (; la, Gaius Aurelius Valerius Diocletianus, grc, Διοκλητιανός, Diokletianós; c. 242/245 – 311/312), nicknamed ''Iovius'', was Roman emperor from 284 until his abdication in 305. He was born Gaius Valerius Diocles ...
to use compulsion; conscription was made universal, most trades were made hereditary, and workers could not legally leave their jobs or travel elsewhere to seek better-paying ones. This included the unwanted middle-class civil service positions and under Constantine, the military. Constantine also tried to provide social programs for the poor to reduce the labour shortage.


Increased militarization

All the
barracks emperor A barracks emperor (also called a "soldier emperor") was a Roman emperor who seized power by virtue of his command of the army. Barracks emperors were especially common in the period from 235 through 284 AD, during the Crisis of the Third Centur ...
s based their power on the military and on the soldiers of the field armies, not on the Praetorians in Rome. Thus, Rome lost its role as the political center of the empire during the third century, although it remained ideologically important. In order to legitimize and secure their rule, the emperors of the third century needed above all military successes. The centre of decision-making shifted away from Rome and to wherever the emperor was with his armies, typically, in the east. This led to the transfer of the capital to the four cities Milan, Trier, Nicomedia, and Sirmium, and then to Constantinople. The Senate ceased to be the main governing organ and instead members of the equestrian class who filled the military officer corps became increasingly prominent.


Emperors

Several emperors who rose to power through acclamation of their troops attempted to create stability by giving their descendants the title of ''
Augustus Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian, was the first Roman emperor; he reigned from 27 BC until his death in AD 14. He is known for being the founder of the Roman Pr ...
'' and so making them co-emperors who later succeeded to the throne after their death or on some occasions their relatives managed to become an emperor immediately after their death. This led to the creation of several brief dynasties.


Non-dynastic


Gordian dynasty


Non-dynastic


Decian dynasty


Non-dynastic


Valerian dynasty


Claudian dynasty


Non-dynastic


Tacitan dynasty


Non-dynastic


Caran dynasty


See also

*
Bagaudae Bagaudae (also spelled bacaudae) were groups of peasant insurgents in the later Roman Empire who arose during the Crisis of the Third Century, and persisted until the very end of the Western Empire, particularly in the less-Romanised areas of G ...
*
Sengoku period The was a period in History of Japan, Japanese history of near-constant civil war and social upheaval from 1467 to 1615. The Sengoku period was initiated by the Ōnin War in 1467 which collapsed the Feudalism, feudal system of Japan under the ...
– a similar period in Japanese history *
Warring States period The Warring States period () was an era in History of China#Ancient China, ancient Chinese history characterized by warfare, as well as bureaucratic and military reforms and consolidation. It followed the Spring and Autumn period and concluded ...
and
Three Kingdoms period The Three Kingdoms () from 220 to 280 AD was the tripartite division of China among the dynastic states of Cao Wei, Shu Han, and Eastern Wu. The Three Kingdoms period was preceded by the Eastern Han dynasty and was followed by the We ...
– similar periods in Chinese history


Citations


General bibliography

* * * Olivier Hekster, ''Rome and Its Empire, AD 193–284'' (Edinburgh, 2008). . * Klaus-Peter Johne (ed.), ''Die Zeit der Soldatenkaiser'' (Akademie Verlag, Berlin 2008). * Lot, Ferdinand. ''End of the Ancient World and the Beginnings of the Middle Ages'' (Harper Torchbooks Printing, New York, 1961. First English printing by Alfred A. Knopf, Inc., 1931). * Moss, H. St. L. B
''The Birth of the Middle Ages''
(Clarendon Press, 1935, reprint Oxford University Press, January 2000). . * Watson, Alaric. ''Aurelian and the Third Century'' (Taylor & Francis, 2004) * White, John F. ''Restorer of the World: The Roman Emperor Aurelian'' (Spellmount, 2004)


Further reading



Hugh Kramer.

University of Calgary.

OSU. {{Authority control 3rd century in the Roman Empire