 Pontic Greek varieties are those originally spoken along the eastern Black Sea coast of Asia Minor, the historical region of Pontus in Turkey.From there, speakers of Pontic migrated to other areas along the Black Sea coast, in Ukraine (see Mariupol#Language structure), Russia and Georgia.Through the forced population exchange after the Greco-Turkish War (1919-1922) and the Treaty of Lausanne of 1923, the Pontic speakers of Turkey were expelled and moved to Greece.