union of Thracian tribes and kingdoms (5th century BC to 1st century AD)
via Wikipedia infobox
Today part ofBulgaria Greece Turkey Romania
The Odrysian kingdom (/oʊˈdrɪʒən/; Ancient Greek: Βασίλειον Ὀδρυσῶν), also known as Odrysia, was an ancient Thracian state that thrived between the early 5th century BC and the early 3rd / late 1st century BC. Located in present-day Bulgaria, southeastern Romania (Northern Dobruja), northeastern Greece and European Turkey, it was a tribal amalgam dominated by the Odrysians that was the first large political entity to develop in the eastern Balkans.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).