Sanjak of Alexandretta
In 1938, the Sanjak of Alexandretta became independent from the French mandate of Syria as the Republic of Hatay, and following a referendum, 8 months later in 1939, it decided to join Turkey as the Hatay Province. This self-annexation was never recognized by Syria, which continues to show the Hatay Province of Turkey as part of Syria's territory on maps.