Explanation the Role of Iranian Authorities on Developing Translation Movement in Abbasid Dynasty

Islamic culture that was based on Koran, traditions and innocent family of the Prophet Mohammad (Greeting upon him), is the holies and most stable global culture and it is still alive and vivid after 14 centuries, and not only it has absorbed the best elements of ancient cultures, such as the Iranian culture, but it also made it sublimed and exalted. It also benefitted from the presence of well-educated Iranian people, in the fields of science and tactfulness. One of the important fields regarding the presence of Iranian scientists in the Islamic civilization was concerned with the translation movements; a movement that took place during the second to 4th centuries A.H. (8th-10th centuries AD), in the framework of extensive translations of the works by different civilizations of the world to Arabic language. It has been tried in this research to express and compare the roles of Barmakids and Al-Sahl dynasties, the active people in the political fields, Al-Bokhtishou, Nobakhtian and Bani Mousa bin Shaker among the scientific authorities in Abbasid imperial court, and according to the conditions they were in it, in transferring and developing science, and also express and state the cases like the performance of each of these dynasties in developing the translation movement, and determining the services provided by these families for the Islamic culture.