through to the early 20th century.
Demotic in yellow,
Pontic in orange,
Cappadocian in green. (Green dots indicate Cappadocian Greek speaking villages in 1910.)
Constantine the Great moved the capital of the Roman Empire to Byzantium (renamed Constantinople) in 330. The city, though a major imperial residence like other cities such as
Trier,
Milan and
Sirmium, was not officially a capital until 359. Nonetheless, the imperial court resided there and the city was the political centre of the eastern parts of the
Roman Empire where Greek was the dominant language. At first,
Latin remained the language of both the court and the army. It was used for official documents, but its influence waned. From the beginning of the 6th century, amendments to the law were mostly written in Greek. Furthermore, parts of the Roman
Corpus Iuris Civilis were gradually translated into Greek. Under the rule of Emperor
Heraclius (610–641 AD), who also assumed the Greek title (, 'monarch') in 610, Greek became the official language of the
Eastern Roman Empire. This was in spite of the fact that the inhabitants of the empire still considered themselves ('Romans') until its end in 1453, as they saw their State as the perpetuation of Roman rule. Latin continued to be used on the coinage and in certain court ceremonies up to the
11th century. Despite the absence of reliable demographic figures, it has been estimated that less than one third of the inhabitants of the Eastern Roman Empire, around eight million people, were native speakers of Greek. The number of those who were able to communicate in Greek may have been far higher. The native Greek speakers consisted of many of the inhabitants of the southern
Balkan Peninsula, south of the
Jireček Line, and all of the inhabitants of
Asia Minor, where the native tongues (
Phrygian,
Lycian,
Lydian,
Carian etc.), except
Armenian in the east, had become extinct and replaced by Greek by the 5th century. In any case, all cities of the Eastern Roman Empire were strongly influenced by the Greek language. In the period between 603 and 619, the southern and eastern parts of the empire (
Syria,
Egypt,
North Africa) were occupied by Persian
Sassanids and, after being recaptured by
Heraclius in the years 622 to 628, were conquered by the Arabs in the course of the
Muslim conquests a few years later. The empire lost its predominantly non-Greek-speaking provinces (Syria, Egypt, North Africa) by the 7th-century Muslim conquests, and its population was overwhelmingly Greek-speaking by the 8th century.
Alexandria, a centre of Greek culture and language, fell to the Arabs in 642. During the seventh and eighth centuries, Greek was gradually replaced by Arabic as an official language in conquered territories such as Egypt, They ranged from a moderately archaic style employed for most every-day writing and based mostly on the written Koine of the
Bible and early Christian literature, to a highly artificial learned style, employed by authors with higher literary ambitions and closely imitating the model of classical Attic, in continuation of the movement of
Atticism in late antiquity. At the same time, the spoken vernacular language developed on the basis of earlier spoken Koine, and reached a stage that in many ways resembles present-day
Modern Greek in terms of grammar and phonology by the turn of the first millennium AD. Written literature reflecting this
Demotic Greek begins to appear around 1100. Among the preserved literature in the Attic literary language, various forms of historiography take a prominent place. They comprise
chronicles as well as classicist, contemporary works of
historiography, theological documents, and
saints' lives. Poetry can be found in the form of hymns and
ecclesiastical poetry. Many of the Byzantine emperors were active writers themselves and wrote chronicles or works on the running of the
Byzantine state and strategic or philological works. Furthermore, letters, legal texts, and numerous registers and lists in Medieval Greek exist. Concessions to spoken Greek can be found, for example, in John Malalas's
Chronography from the 6th century, the
Chronicle of
Theophanes the Confessor (9th century) and the works of Emperor
Constantine VII Porphyrogenitus (mid-10th century). These are influenced by the vernacular language of their time in choice of words and
idiom, but largely follow the models of written Koine in their
morphology and
syntax. The spoken form of Greek was called ( 'vernacular language'), ( 'basic Greek'), ( 'spoken') or ( 'Roman language'). Before the 13th century, examples of texts written in vernacular Greek are very rare. They are restricted to isolated passages of popular
acclamations, sayings, and particularly common or untranslatable formulations which occasionally made their way into Greek literature. Since the end of the 11th century, vernacular Greek poems from the literary realm of
Constantinople are documented. The , a collection of heroic sagas from the 12th century that was later collated in a
verse epic, was the first literary work completely written in the vernacular. The Greek vernacular verse epic appeared in the 12th century, around the time of the French romance novel, almost as a backlash to the Attic renaissance during the dynasty of the Komnenoi in works like
Psellos's
Chronography (in the middle of the 11th century) or the
Alexiad, the biography of Emperor
Alexios I Komnenos written by his daughter
Anna Komnena about a century later. In fifteen-syllable
blank verse (), the deals with both ancient and medieval heroic sagas, but also with stories of animals and plants. The
Chronicle of the Morea, a verse chronicle from the 14th century, is unique. It has also been preserved in French, Italian and
Aragonese versions, and covers the history of
Frankish feudalism on the
Peloponnese during the of the
Principality of Achaea, a crusader state set up after the
Fourth Crusade and the 13th century
fall of Constantinople. The earliest evidence of prose vernacular Greek exists in some documents from southern Italy written in the tenth century. Later prose literature consists of statute books, chronicles and fragments of religious, historical and medical works. The dualism of literary language and vernacular was to persist until well into the 20th century, when the
Greek language question was decided in favour of the vernacular in 1976.
Dialects The persistence until the Middle Ages of a single Greek speaking state, the Byzantine Empire, meant that, unlike
Vulgar Latin, Greek did not split into separate languages. However, with the fracturing of the Byzantine state after the turn of the first millennium, newly isolated dialects such as
Mariupol Greek, spoken in Crimea,
Pontic Greek, spoken along the Black Sea coast of Asia Minor, and
Cappadocian, spoken in central Asia Minor, began to diverge. In
Griko, a language spoken in the southern Italian
exclaves, and in
Tsakonian, which is spoken on the Peloponnese, dialects of older origin continue to be used today.
Cypriot Greek was already in a literary form in the late Middle Ages, being used in the
Assizes of Cyprus and the chronicles of
Leontios Makhairas and
Georgios Boustronios. ==Phonetics and phonology==