Positions ranks and titles in the sassanian age

Sassanian  ruled Iran from 224–652 AD. The Sassanids linked their series of lineage with Akminian rulers where more than forty Sassanin kings have ruled, the last one of them was Yazdegerd III who ruled in the duration from (632–651) and he resisted Muslims unsuccessfully and spent the last ten years of his life on the run and to be chased. 
Sassanian era comprised the revival of Iranian nationalism, the matter which made Iran one of the largest ancient civilizations. All what remained of statues, inscriptions, texts and money represent this civilization with certainty. The subject of our research which we are going to talk about is the best proof that the Sasanian government was one of the most organized and updated governments. In the Sasanian government, there were numerous governmental positions and titles, therefore, the Abbasid caliphs accurately imitated the Sasanian government regime. After that, these remained fundamentals remained for extended periods in the Islamic Royal Courts. From what was circulated in these Islamic royal courts, the one could identify the Iran government regimes in the Sassanian era.