Bulgaria–Turkey border
The Bulgaria–Turkey border (Bulgarian: Българо-турска граница, romanized: Būlgaro-turska granitsa,Turkish: Bulgaristan–Türkiye sınırı) is a 513 km (319 mi) long international border between the Republic of Bulgaria and the Republic of Turkey. It was established by the Treaty of San Stefano in 1878 as an inner border within the Ottoman Empire between Adrianople Vilayet and the autonomous province of Eastern Rumelia. The current borders are defined by the Treaty of Constantinople (1913) and the Bulgarian–Ottoman convention (1915). The border was reaffirmed by the Treaty of Lausanne ten years later, though Bulgaria was not a party to the latter treaty as it had earlier ceded to Greece that part of its border with Turkey which was modified by the Bulgarian-Ottoman convention.
| Bulgaria-Turkey border | |
|---|---|
| Characteristics | |
| Entities | Bulgaria Turkey |
| Length | 259 km (161 mi) |
| History | |
| Established | 3 March 1878 Signing of the Treaty of San Stefano at the end of the Russo-Turkish War (1877–1878) |
| Current shape | 6 August 1924 Signing of the Treaty of Lausanne at the end of the Turkish War of Independence |
| Treaties | Treaty of San Stefano, Treaty of Berlin, Tophane Agreement, Treaty of London, Treaty of Constantinople, Treaty of Sèvres, Treaty of Lausanne |