Slavic settlement of the Eastern Alps
The settlement of the Eastern Alps region by early Slavs took place during the 6th to 8th centuries. It is part of the southward expansion of the early Slavs which would result in the characterization of the South Slavic group, and would ultimately result in the ethnogenesis of the modern Slovene people. The Eastern Alpine territories concerned comprise modern-day Slovenia, Eastern Friul and large parts of modern Austria (Carinthia, Styria, Lower Austria and Upper Austria).
The migration of Slavic peoples from their homeland began in roughly the late 4th to early 5th century, as Germanic peoples started moving into the territory of the Roman Empire. The migrations were stimulated by the arrival of Huns into Eastern Europe. The Germanic peoples subsequently fought for control over territories in the eastern part of the disintegrating Roman Empire. Slavic tribes were part of various tribal alliances with the Germanic (Lombards, Gepids) and Eurasian (Avar, Bulgar) peoples.
The prevailing view on the Slavic settlement of the Eastern Alps is based mostly on evidence deduced from archeological remains (many of which have been discovered due to the extensive highway constructions in post-1991 Slovenia), ethnographic traces (patterns of rural settlement and land cultivation), as well as on the ascertainments of historical linguistics (including toponymy). Besides, it is fully confirmed by the relatively few available contemporary mentionings and early historical sources (such as Historia Langobardorum by Paulus Diaconus or letters from Pope Gregory I). Another important evidence of Slavic advances is the progressive decline of ancient Christian dioceses in the respective areas.
Phases of the settlement
The first phase of Slavic settlement in the Eastern Alps region is dated around the year 550 and originated in the area of modern Moravia (i.e., the West Slavic speaking branch). From there, Slavic peoples moved southward into the territory of the former Roman province of Noricum (modern Upper and Lower Austria regions). Subsequently, they progressed along the valleys of Alpine rivers towards the Karavanke range and towards the settlement of Poetovio (modern Ptuj), where the decline of the local diocese is recorded before 577.
The second phase of Slavic settlement came from the south and took place after the retreat of Lombards into Northern Italy in 568. The Lombards contracted to cede the relinquished territory to their new allies, the Avars, who at that time were the overlords of Slavs. Avars first appeared in Europe around 560 when they reached lower Danube. In 567 the Avars and Lombards jointly defeated the Gepids. After the Lombards moved to Italy in 568, the Avars became the nominal rulers of both the Pannonian plain (which they had conquered by 582) and the adjacent Eastern Alps region. The Slavic-Avar progress towards the Eastern Alps is traceable on the basis of synodal records of the Aquileian metropolitan church which speak of the decline of ancient dioceses (Emona, Celeia, Poetovio, Aguntum, Teurnia, Virunum, Scarabantia) in the respective area. In 588 the Slavs reached the area of the Upper Sava River and in 591 they arrived to the Upper Drava region where they soon fought with the Bavarians who were led by king Tassilo I. In 592 the Bavarians won, but in 595 the Slavic-Avar army gained victory and thus consolidated the boundary between the Frankish and Avar territories. Between 599-600 the Slavs pushed through Istria and the Karst region towards Italy.
Driven by German colonization of Austria, Slavs settled the entire Kras and the Gail valley between 600 and the 8th century. From there, they penetrated Friuli in Val Canale and in the secondary valleys (Dogna, Val Raccolana, Val Resia), going even in the valleys of rivers Degano, But and Tagliamento. Other areas from which Slavs penetrated were the valleys of rivers Isonzo and Vipava, where they entered in the eighth century. In this area they had already appeared during the Slavic-Avar raids of early 600. Finally there were raids and clashes caused by Slavic bands in the valleys of rivers Torre and Natisone up to 720. The attempt by Slavs to penetrate violently westward probably ended after they had been defeated by the Lombards at Lauriana, in 720. Subsequently, Slavic settlers were invited by the patriarchs of Aquileia to repopulate the areas of Middle and Lower Friuli to the river Livenza, devastated by the Magyar incursions.
Avar domination over the Slavs persisted until mid 620s. In 623 the Slavs, led by Frankish merchant Samo, rebelled against the Avars. In 626 the Avars were ultimately defeated at Constantinople, after which Samo became the ruler of the first historically known Slavic polity, Samo's Tribal Union, which persisted until his death in 658. Subsequently, a smaller Slavic principality emerged around 660, known as Carantania, and was absorbed into the Frankish Empire in 745.
Slavs and the aboriginal population
After settling in the Eastern Alps region, Slavs subsequently subjugated the aboriginal Romanised population which had dwelt in the territory of the former Noricum province and in its cities. In late antiquity, the aboriginal population evaded Slavic settlers by moving into remote and elevated places, usually hills, where they built fortifications; such examples are Ajdna in the Karavanke mountain ridge and Rifnik near modern Celje. However, recent archeological research shows that even certain well-fortified cities in the lower areas managed to protect themselves from the invaders. Part of the aboriginal population escaped into Italy and to the cities along the Adriatic coast, among them Civitas Nova (modern Novigrad). Many aborigines were enslaved by the Slavs (an old Slavic term for slaves was krščenik, meaning a Christian, as the aborigines were Christians), some, however, assimilated with Slavs and thus enriched their culture.
Slavs referred to the Romanised aborigines as Vlahi or Lahi. Certain place names in modern Slovenia, such as Laško, Laški rovt, Lahovče, and others, bear witness to this. Also a number of river names in modern Slovenia, like Sava, Drava, Soča, as well as the geographic name Carniola (Slovenian Kranjska) were adopted from the Romanised aborigines.
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