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
Geography of Turkey of the sizable Greek-speaking community of western Turkey were forced to resettle in Greece, while the majority of the Turkish-speaking residents of Thrace who were not forced out during the Balkan wars were removed to Turkey. The boundary with Bulgaria was confirmed by the Treaty of Lausanne (1923). Since 1991 the more than boundary with the former Soviet Union, which was defined in the 1921 Treaty of Moscow (1921) and Treaty of Kars, has formed Turkey's borders with the independent countries of Armenia, Azerbaijan, and Georgia. The boundary with Iran was confirmed by the Treaty of Kasr-ı Şirin in 1639.