Moesia was an ancient region and later Roman province situated in the Balkans south of the Danube River. Moesian Province was first administered by governor of Noricum as 'Civitates of Moesia and Triballia'. It included most of the territory of modern eastern Serbia, Kosovo, north-eastern Albania, northern parts of North Macedonia, Northern Bulgaria, Romanian Dobruja and small parts of Southern Ukraine.
Sirmium was a city in the Roman province of Pannonia, located on the Sava river, on the site of modern Sremska Mitrovica in the Vojvodina autonomous province of Serbia. First mentioned in the 4th century BC and originally inhabited by Illyrians and Celts, it was conquered by the Romans in the 1st century BC and subsequently became the capital of the Roman province of Pannonia Inferior. In 294 AD, Sirmium was proclaimed one of four capitals of the Roman Empire. It was also the capital of the Praetorian prefecture of Illyricum and of Pannonia Secunda. The site is protected as an archaeological Site of Exceptional Importance. The modern region of Syrmia was named after the city.
Singidunum was an ancient city which later evolved into modern Belgrade, the capital of Serbia. The name is of Celtic origin, going back to the time when Celtic tribe Scordisci settled the area in the 3rd century BC, following the Gallic invasion of the Balkans. Later on, the Roman Republic conquered the area in 75 BC and incorporated it into the province of Moesia. It was an important fort of the Danubian Limes and Roman Legio IV Flavia Felix was garrisoned there since 86 AD. Singidunum was the birthplace of the Roman Emperor Jovian. It was sacked by Huns in 441, and by Avars and Slavs in 584. At the beginning of the 7th century, the Singidunum fort was finally destroyed.
The praetorian prefecture of Illyricum was one of four praetorian prefectures into which the Late Roman Empire was divided.
Justiniana Prima was an Eastern Roman city that existed from 535 to 615, and currently an archaeological site, known as or Caričin Grad, near modern Lebane in the Leskovac region, southern Serbia. It was founded by Emperor Justinian I (527-565) and served as the metropolitan seat of the then newly founded Archbishopric of Justiniana Prima, which became the main church administrative body of the central and western Balkans with jurisdiction from Praevalitana to Dacia Ripensis. Justinian Prima was originally designed to become the capital of the prefecture of Illyricum, but for reasons likely related with its status near the Roman frontiers of the 6th century CE, Thessaloniki was preferred. It was abandoned less than 100 years after its foundation.
South Slavs are Slavic people who speak South Slavic languages and inhabit a contiguous region of Southeast Europe comprising the eastern Alps and the Balkan Peninsula. Geographically separated from the West Slavs and East Slavs by Austria, Hungary, Romania, and the Black Sea, the South Slavs today include Bosniaks, Bulgarians, Croats, Macedonians, Montenegrins, Serbs and Slovenes.
Pannonia Secunda was one of the provinces of the Roman Empire. It was formed in the year 296, during the reign of emperor Diocletian. The capital of the province was Sirmium. Pannonia Secunda included parts of present-day Serbia, Croatia, and Bosnia and Herzegovina.
Pannonia was a Byzantine province, which existed in present-day Syrmia region of Serbia in the 6th century. Its capital was Sirmium.
The Sclaveni or Sklabenoi were early Slavic tribes that raided, invaded and settled in the Balkans in the Early Middle Ages and eventually became the progenitors of modern South Slavs. They were mentioned by early Byzantine chroniclers as barbarians having appeared at the Byzantine borders along with the Antes, another Slavic group. The Sclaveni were differentiated from the Antes and Wends ; however, they were described as kin. Eventually, most South Slavic tribes accepted Byzantine or Frankish suzerainty, and came under their cultural influences and Chalcedonian Christianity. The term was widely used as a general catch-all term until the emergence of separate tribal names by the 10th century.
Dacia Mediterranea was a late antique Roman province, whose capital city was Serdica.
The Diocese of Dacia was a diocese of the later Roman Empire, in the area of modern western Bulgaria, central Serbia, Montenegro, northern Albania and northern North Macedonia. It was subordinate to the Praetorian prefecture of Illyricum. Its capital was at Serdica.
Praevalitana was a Late Roman province that existed between c. 284 and c. 600. It included parts of present-day Montenegro, northern Albania, and part of present-day Kosovo. Its capital city was Doclea, later Scodra.
Maurice's Balkan campaigns were a series of military expeditions conducted by Roman Emperor Maurice in an attempt to defend the Balkan provinces of the Roman Empire from the Avars and the South Slavs. Maurice was the only East Roman emperor, other than Anastasius I, who did his best to implement determined Balkan policies during Late Antiquity by paying adequate attention to the safety of the northern frontier against barbarian incursions. During the second half of his reign, the Balkan campaigns were the main focus of Maurice's foreign policies, as a favourable peace treaty with Persian Empire in 591 enabled him to shift his experienced troops from the Persian front to the region. The refocusing of Roman efforts soon paid off: the frequent Roman failures before 591 were succeeded by a string of successes afterwards.
Dardania was a Illyrian province in the Central Balkans, initially an unofficial region in Moesia (87–284), and then a province administratively part of the Diocese of Moesia (293–337). It was named after the tribe of the Dardani who inhabited the region in classical antiquity prior to the Roman conquest.
Archbishopric of Justiniana Prima was an Eastern Christian autonomous Archbishopric with see in the city of Justiniana Prima and jurisdiction over the Late Roman Diocese of Dacia in central parts of the Southeastern Europe.
Moesia Prima was a frontier province of the Late Roman Empire, situated in the central parts of present-day Serbia, along the south bank of the Danube River. Provincial capital was Viminacium, near modern Kostolac in Serbia).
The Eparchy of Niš is an eparchy (diocese) of the Serbian Orthodox Church with its seat in Niš, in Serbia. It has jurisdiction over the south-eastern regions of Serbia. Since 2017, Serbian Orthodox Bishop of Niš is Arsenije Glavčić.
The Metropolitanate of Skopje is an Eastern Orthodox eparchy, formerly under the jurisdiction of the Orthodox Ohrid Archbishopric, an autonomous and canonical branch of the Serbian Orthodox Church in North Macedonia. Its seat is in Skopje. It is a metropolitan diocese of the Orthodox Ohrid Archbishopric, headed by Archbishop Jovan Vraniškovski of Ohrid, who is also styled Metropolitan of Skopje.
The Avar–Byzantine wars were a series of conflicts between the Byzantine Empire and the Avar Khaganate. The conflicts were initiated in 568, after the Avars arrived in Pannonia, and claimed all the former land of the Gepids and Lombards as their own. This led to an unsuccessful attempt to seize the city of Sirmium from Byzantium, which had previously retaken it from the Gepids. Most subsequent conflicts came as a result of raids by the Avars, or their subject Slavs, into the Balkan provinces of the Byzantine Empire.
The Byzantine–Serbian wars were a series of wars between the Byzantine Empire and the medieval Serbian states. Starting with the Sclaveni and Antae migrations into the Balkans, the succession of medieval Serbian states went through several periods of warfare with the Eastern Roman Empire.
