Liburnian domination in the Adriatic Sea; its first phase (9th century BC), because of the aforementioned migrations, did not continue the developments of the Late Bronze Age, except in certain forms.
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In light of this strategy, he established a few Syracusan colonies on the coasts of the Adriatic Sea: Adria at the mouth of Po river and Ancona at the western Adriatic coast, Issa on the outermost island of the central Adriatic archipelago (island of Vis) and others.
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The Liburnians were renowned seafarers, notorious for their raids in the Adriatic Sea, which they conducted in their swift galleys.
The Battle of Pharos was a naval battle between the Greek colony Pharos allied with Dionysius the Elder of Syracuse and the Illyrian Liburnians, which took place in 383/4 BC.The Illyrians of Zadar, the Iadasinoi, became allies of the natives of Hvar and the leaders of an eastern Adriatic coast coalition in the fight against the Greek colonizers.
Their territory began after Liburnian Scardona (Skradin), spreading in small region directly to the south of Liburnia, and border ran roughly through the middle of the peninsula which Roman sources called Hyllus.
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In Liburnia, centres such as Nedinium (Nadin), Asseria (Podgrađe, near Benkovac), Iader (Zadar) continued to exist in Roman times, and the Liburnians retained their ethnic distinctiveness under Rome, while the same did not occur on the neighbouring Hyllus Peninsula.