In the meanwhile a number of Latin colonies had been settled along the coast, supplanting those of the Greeks. Their splendour and importance may be gauged from the magnificent Roman remains, especially those of the great palace built by Diocletian, himself an Illyrian, at Spalato, and of Salona,[5] the ancient capital of the province.

Roman Dalmatia included besides the modern region of that name the whole of Bosnia, the Herzegovina, Montenegro, and parts of Croatia and Albania. Diocletian divided it into two provinces, Dalmatia proper to the north, and Prævalis or Prævalitana to the south. At the time of the partition of the Roman Empire Dalmatia was apportioned to the Western division, the neighbouring provinces of Dardania, Mœsia Superior, and Prævalis to the Eastern. When the barbarian hordes began to pour down into Southern Europe the latter province remained under Roman rule until early in the sixth century, but Dalmatia was conquered in 481 by Odovakar, and added to the Gothic kingdom of Italy. Both these facts emphasise Dalmatia’s character as an outpost of the West in the Eastern world. But the Slaves, the last of the barbarians to march westwards and southwards, soon began to press ever more closely against the Roman settlements, and the colonists were driven from the interior to the coast towns. From the letters of Pope Gregory I. we see that at his time (590-603) Epidaurum, Salona, Doclea, and a few other Roman cities still survived. But in 600, in a letter to the Bishop of Salona, he expressed great sorrow that Dalmatia was hard pressed by the barbarians. “De Sclavorum gente, quae vobis imminet, affligor vehementer et conturbor.”[6] The whole province was becoming desolate. In 535 the Byzantine Greeks reconquered it from the Goths together with Pannonia. In 539 it was overrun by Huns, Bulgarians, and Slaves, liberated by Narses in 552, and added to the Exarchate of Ravenna. Later it was made into a separate Exarchate; but after the death of the Emperor Maurice the Slaves became masters of the greater part of the country.

When the Eastern Empire was divided into themes, the remaining fragments of the Roman colonies on the Illyrian shore were erected into the Themes of Dalmatia and Dyrrhachium. The former is described at length by Constantine Porphyrogenitus in his De Administrando Imperio,[7] written in 949; it consisted of little more than a few cities and islands, all the rest of the land being peopled by barbarians.

The capital of the Dalmatian theme was no longer Salona, which together with Epidaurum had been destroyed by the Avars in the seventh century, but Jadera or Zara. The other towns of the theme were: Veglia, Arbe, and Opsara (comprising Cherso and Lussino) in the Quarnero; Tragurium, Spalatum or Aspalathum, and Rhagusium, founded by refugees from Salona and Epidaurum; Decatera (Cattaro), Rosa (Porto Rose), and Butova (Budua). The theme was governed by a Greek Strategos residing at Zara (Jadertinus Prior), and by inferior officials (dukes) in the smaller centres. But their authority hardly extended beyond the town walls.

The inhabitants of these cities in the themes of Dalmatia and Dyrrhachium were the remains of the Roman provincials from all parts of Illyria. Porphyrogenitus calls them Romans, as distinguished from the Ῥωμαῖοι or Byzantine Greeks. In spite of all subsequent Slavonic incursions Latin, and later Italian, always remained the official language; it was also the common language of the people all down the coast, save at Ragusa, where Slavonic was also spoken at an early date.[8] Other fragments of the Roman population were to be found perhaps among the shepherds of the mountains, who were either Latins or Latinised descendants of the native Illyrians. The Slaves speak of them as together with the town-dwellers as Vlachs, which word signifies Italians or Rumanians to this day. The townsmen described these shepherds as Maurovlachs, i.e. “Sea Vlachs” or “Black Vlachs.”[9]

The other Dalmatian towns and all the country outside the towns were occupied, as we have said, by the Southern Slaves. Of these the two principal tribes were the Serblii or Serbs and the Chrobatians or Croatians. The latter settled in the northern part of the country; their frontiers were the Save, the Kulpa, the Arsia, and the Četina. Their settlement seems to have preceded that of the Serbs. They came from the land beyond the Carpathians, with the name of which theirs may have been connected. Croatia was divided into fourteen Župe or counties, each governed by a Župan. The various Župans owed a somewhat shadowy allegiance to a Grand Župan, whose title was afterwards changed to that of king. The Serbs, who issued forth from what is now Galicia, settled in the land to the south and east of that of the Croatians, i.e. the modern kingdom of Servia, Old Servia, Montenegro, Northern Albania, and Dalmatia south of the Četina. For many centuries they recognised no central authority, but were divided into tribes, of which the most important were the Diocletiani or Docletiani, who occupied what is now Montenegro and part of Albania; the Terbuniotae, whose country, called Terbunia or Tribunia or Travunia, centres round the modern Trebinje, with the semi-independent southern district of Canale or Canali;[10] the coast north of Ragusa up to the Narenta was occupied by the Zachloumoi of Constantine Porphyrogenitus, and was called Zachlumje, Zachulmia, Hlum, or Chelmo. It corresponds to the Herzegovina.[11] About the Narenta was the land of the Narentani (the Ἀρεντάνοι or Παγάνοι of Porphyrogenitus), notorious for their piratical exploits. This tribe was converted to Christianity much later than the other Serbs, whence their name of Pagani. Inland was Bosnia, inhabited by various tribes. Still deeper in the interior was the territory of the Serbs proper.[12]

Thus by the eighth century we have a series of coast towns and a few islands peopled by Latins still under the rule of the Eastern Roman Empire set in the midst of a country whose inhabitants, if we except the Latin or Latinised shepherds, were all Slaves. Imperial influence over these townships gradually declined, and at an early date they constituted themselves into city-states of the Italian type.[13] As they grew rich and powerful they acquired territory, developed their trade, both sea-borne and with the interior, until they were finally absorbed by the Venetian Republic. Their conditions are, therefore, in many respects similar to those prevailing in the maritime republics of Italy during this period. In Italy there was a Latin civilisation, overwhelmed by hordes of pagan or partly pagan barbarians. Italy, like Dalmatia, is reclaimed to Latin culture by Greek arms, and the Greeks rule over it, although constantly fighting the armies of the invaders with varying success. There, too, city-communities arise on or near the sites of Roman cities, modelling their institutions and their laws on those of Rome, with certain modifications due to barbarian influences. But here the parallel ends. In Italy the barbarian hordes never settled in such large numbers as wholly to absorb the Latins, whereas the Slaves in Dalmatia far outnumbered the colonists, and, save for the Latin fringe, the land soon became a Slavonic land. Whereas in Italy, Latins and barbarians soon amalgamated—in fact, one may say that the former absorbed the latter—in Dalmatia, Latins and Slaves have remained distinct and separate to this day, in language, character, and ideals. The Latin cities were like islands in a Slavonic sea. The relations between the Latins and the barbarians in Italy, even before they amalgamated, were different from what they were in Dalmatia. In Italy the feudal system arose among the Germanic peoples, and Germanic lords had Latin subjects and serfs, whereas the Slavonic chieftains of Dalmatia had no Latin dependents to speak of. The causes of this division of race and language, which exercised so deep an influence on the history and development of the Dalmatian municipia, are not very apparent. They are probably to be sought in the different proportions of barbarians to Latins in the two countries. In Italy the number of invaders who settled permanently in the country was never very great compared with that of the Latin inhabitants. The conquered were, therefore, soon able to absorb the conquerors, having civilisation as well as numbers on their side. But in Dalmatia the Slaves were, as we have said, far more numerous than the Latin burghers; and while the former could not absorb the communities of the coast, because they were more civilised, the latter, being so few in numbers, failed to absorb the Slaves. It should, moreover, be remembered that even the Latins were originally colonists from another land, and that the native Illyrians, of whom no trace now remains in Dalmatia, may perhaps have been merged in the Slaves, and helped to swell their numbers.

View of Ragusa
(From P. G. Coronelli’s “Views of Dalmatia”, 1680)