Lysimachia (Thrace) Lysimachia (Thrace) Lysimachia () was an important Hellenistic Greek town on the north-western extremity of the Thracian Chersonese (the modern Gallipoli peninsula) in the neck where the peninsula joins the mainland in what is now the European part of Turkey, not far from the bay of Melas (the modern Gulf of Saros). The city was built by Lysimachus in 309 BCE, when he was preparing for the last struggle with his rivals; for the new city, being situated on the isthmus, commanded the road from Sestos to the north and the mainland of Thrace. In order to obtain inhabitants for
Thrace (theme) Krum (r. 803–814), Omurtag (r. 814–831), and Symeon (r. 893–927) the border moved by stages south of the Balkan mountains to roughly the line of the present Bulgarian frontier with Greece and Turkey. Thus, at around the start of the 10th century, the theme comprised essentially the eastern half of modern Eastern Thrace, although it extended north along the coast to include Anchialos. From the 11th century, Thrace and Macedonia appear to have been usually combined, as attested by numerous "strategoi" and judges ("kritai") holding jurisdiction over both themes. The name fell out of use as an administrative term in