East Thrace the Turkish Straits) and the Sea of Marmara, a route of about 361 km. The southernmost part of Eastern Thrace is called the Gallipoli peninsula. European Turkey is bordered on the west by Greece for 212 km and on the north by Bulgaria for 269 km, with the Aegean Sea to the south-west and the Black Sea to the north-east. East Thrace was the setting for several important events in history and legend. The mass killings and displacement of Thracian Bulgarians in 1913 and the 1923 population exchange between Greece and Turkey ethnically cleansed the Orthodox populations. Prior to that
East Thrace the distribution of ethnoreligious groups in the local "sanjaks" was as follows: The Muslim "millet" was recorded as Turkish, while the church members of the Ecumenical Patriarchate as Greek. In the past century modern East Thrace was the main component of the territory of the Adrianople Vilayet, which excluded the Constantinople Vilayet, but included West Thrace and parts of the Rhodopes and Sakar. A publication from December 21, 1912 in the Belgian magazine "Ons Volk Ontwaakt" (‘Our Nation Awakes’) estimated 1,006,500 inhabitants in the vilayet: East Thrace East Thrace or Eastern Thrace ( or simply "Trakya"; , "Anatoliki Thraki"; ,