Moesia Inferior in the context of "Southern Ukraine"

The Crimean Peninsula (at the time known as Taurica) was under partial control of the Roman Empire during the period of 47 BC to c. 340 AD. The territory under Roman control mostly coincided with the Bosporan Kingdom (although under Nero, from 62 to 68 AD; it was briefly attached to the Roman Province of Moesia Inferior).Rome lost its influence in Taurica in the mid third century AD, when substantial parts of the peninsula fell to the Goths, but at least nominally the kingdom survived until the 340s AD. The Eastern Roman Empire, the eastern part of the Roman Empire that survived the loss of the western part of the empire, later regained Crimea under Justinian I. The Byzantine Empire controlled portions of the peninsula well into the Late Middle Ages.

Paristrion (Greek: Παρίστριον, lit. 'beside the Ister'), or Paradounabon/Paradounabis (Παραδούναβον / Παραδούναβις), which is preferred in official documents, was a Byzantine province covering the southern bank of the Lower Danube (Moesia Inferior) in the 11th and 12th centuries.

Although Byzantine authors use the term to describe the lands along the Danube in general, the province of Paristrion seems to have comprised mostly modern Dobruja. It is not certain exactly when the province was established: the Romanian scholar Nicolae Bănescu considered that it was established immediately after the end of the Rus'–Byzantine War of 970–971, while others, such as Vasil Zlatarski, thought it a later, mid-11th century creation. It was governed by a katepano or a doux, and was probably based at Dorostolon (modern Silistra), where a Byzantine strategia ("generalcy") is indeed attested in the 970s. In the aftermath of his victory over the Rus', Emperor John I Tzimiskes (r. 969–976) appointed general Leo Sarakenopoulos as commander over north-eastern Bulgaria, based at Pereyaslavets/Ioannopolis. Sarakenopoulos and his subordinates engaged in major fortification activities in the region of the Dobruja over the next few years, where abandoned Roman-era forts were rebuilt and re-occupied.

The Bosporan Kingdom, also known as the Kingdom of the Cimmerian Bosporus (Ancient Greek: Βασιλεία τοῦ Κιμμερικοῦ Βοσπόρου, romanized: Basileía tou Kimmerikou Bospórou; Latin: Regnum Bospori), was an ancient Greco-Scythian state located in eastern Crimea and the Taman Peninsula on the shores of the Cimmerian Bosporus, centered in the present-day Strait of Kerch. It was the first truly 'Hellenistic' state, in the sense that a mixed population adopted the Greek language and civilization, under aristocratic consolidated leadership. Under the Spartocid dynasty, the aristocracy of the kingdom adopted a double nature of presenting themselves as archons to Greek subjects and as kings to barbarians, which some historians consider unique in ancient history. The Bosporan Kingdom became the longest surviving Roman client kingdom. The 1st and 2nd centuries AD saw a period of a new golden age of the Bosporan state. It was briefly incorporated as part of the Roman province of Moesia Inferior from AD 63 to 68 under Emperor Nero, before being restored as a Roman client kingdom. At the end of the 2nd century AD, King Sauromates II inflicted a critical defeat on the Scythians and included all the territories of the Crimean Peninsula in the structure of his state.

The prosperity of the Bosporan Kingdom was based on the export of wheat, fish and slaves. As a result, the Kingdom became the economic center of the Black Sea and is often dubbed the ancient Jewel of the Black Sea. The profit of the trade supported a class whose conspicuous wealth is still visible from newly discovered archaeological finds, excavated, often illegally, from numerous burial barrows known as kurgans. The once-thriving cities of the Bosporus left extensive architectural and sculptural remains, while the kurgans continue to yield spectacular Greco-Sarmatian objects, the best examples of which are now preserved in the Hermitage Museum in St. Petersburg. These include gold work, vases imported from Athens, coarse terracottas, textile fragments, and specimens of carpentry and marquetry.

In Roman literature of the early 1st century CE, the Moesi (/ˈmiːsaɪ/ or /ˈmiːzaɪ/; Ancient Greek: Μοισοί, Moisoí or Μυσοί, Mysoí; Latin: Moesi or Moesae) appear as a tribe who lived in the region around the Timok River to the south of the Danube. The Moesi do not appear in ancient sources before Augustus's death in 14 CE and are mentioned only by three authors dealing with the Roman warfare in the region and the ethnonymic situation between mid-1st century BC and mid-1st century CE: Ovid, Strabo and Livy. A Paleo-Balkan tribe known as the Moesi never actually existed in the Danube area before that period, it was a Roman invention. The ethnonym was transplanted from Asia Minor Mysians to the Balkans by the Romans as a replacement of the name of the Dardani who lived in the territory that later became the province of Moesia Superior. This decision in Roman literature is linked to the appropriation of the name Dardani in official Roman ideological discourse as Trojan ancestors of the Romans and the creation of a fictive name for the actual Dardani who were seen as barbarians and antagonists of Rome in antiquity. This new fictive Augustan terminology was illogically and controversially argumented by Strabo as the result of Aelius Catus's displacement of 50,000 Getae from the north to the south of the Danube, who settled areas in the north-eastern parts of the later province of Moesia Superior, thereafter being called "Moesi".

The Latin name Moesia was given first to the province of Moesia Superior and expanded into Moesia Inferior along the Danube. After the recreation of Dardania, Moesia referred to Moesia Prima, the northern part of Moesia Superior. A civitas of the Moesi which was reorganized as a Roman colony was located around Ratiaria in the first century AD.

Legio I Italica ("First Italian Legion") was a legion of the Imperial Roman army founded by emperor Nero on September 22, 66 (the date is attested by an inscription). Labeled Phalanx Alexandri Magni and originally destined to the east, it was instead employed in Italy during the year of four emperors. It was later stationed at Novae, near modern-day Svishtov (Bulgaria). There are still records of the I Italica on the Danube border at the beginning of the 5th century. The emblem of the legion was a boar.

The Battle of Abritus also known as the Battle of Forum Terebronii occurred near Abritus (modern Razgrad) in the Roman province of Moesia Inferior in the summer of 251. It was fought between the Romans and a federation of Gothic and Scythian tribesmen under the Gothic king Cniva. The Roman army was soundly defeated, and Roman emperors Decius and Herennius Etruscus, his son, were both killed in battle. It was one of the worst defeats suffered by the Roman Empire against the Germanic tribes, rated by the Roman historian Ammianus Marcellinus as on par with the Battle of the Teutoburg Forest in 9, the Marcomannic invasion of Roman Italy in 170, and the Battle of Adrianople in 378.

The emperors' deaths led to more political instability at Rome; and the loss of the army allowed repeated barbarian incursions in the region for the next two decades.

Scythia Minor or Lesser Scythia (Greek: Μικρά Σκυθία, romanized: Mikra Skythia) was a Roman province in late Antiquity, occupying the lands between the lower Danube and the Black Sea, the modern-day Dobruja region in Romania and Bulgaria. It was detached from Moesia Inferior by the Emperor Diocletian to form a separate province sometime between 286 and 293 CE. The capital of the province was Tomis (modern-day Constanța). It ceased to exist around 679–681, when the region was overrun by the Bulgars, which the Emperor Constantine IV was forced to recognize in 681.

According to the Laterculus Veronensis of c. 314 and the Notitia Dignitatum of c. 400, Scythia belonged to the Diocese of Thrace. Its governor held the title of praeses and its dux commanded two legions, Legio I Iovia and Legio II Herculia. The office of dux was replaced by that of quaestor exercitus, covering a wider area, in 536.

Novae was initially one of the few great Roman legionary fortresses along the empire's border, forming part of the defences (limes Moesiae) along the Danube in northern Bulgaria. The settlement later expanded into a town in the Roman province of Moesia Inferior, later Moesia Secunda.

It lies about 4 km east of the modern town of Svishtov.

The Tropaeum Traiani or Trajan's Trophy lies 1.4 km northeast of the Roman city of Civitas Tropaensium (near the modern Adamclisi, Romania). It was built in AD 109 in then Moesia Inferior, to commemorate Roman Emperor Trajan's victory over the Dacians in 106, including the victory at the Battle of Adamclisi nearby in 102.

It was part of a monumental complex comprising the trophy monument, the tumulus grave behind it and the commemorative altar, raised in 102 AD for soldiers fallen in the battles of this region. The complex forms a triangular plan, the base being marked by the monument and the funerary tumulus while the upper point is the altar.