The Treaty of Lausanne established Western Thrace in 1923 after the League of Nations Population Exchange in which 1.4 million Greeks returned to Greece and 750,000 Turks returned to Turkey.

• 在国际联盟的人口交换项目之后，1923年洛桑条约签订，140万希腊人返回母国，75万土耳其人返回土耳其。