The Seleucid dynasty gradually lost control of Persia. In 253 , the Arsacid dynasty established itself in پارتھیا . The Parthians gradually expanded their control , until by the mid-2nd century BC , the Seleucids had completely lost control of Persia. Control of eastern territories was permanently lost by Antiochus VII in 129 BC.
Entity: پارتھیا — Type: /location