Abstract
The Arab Caliphate was famous for its highly developed book culture and the fact that it turned the Arabic language into the international language of communication, science and art throughout the Arab-Muslim East. During the reign of the Abbasid dynasty, the Arab-Muslim civilization is experiencing the peak of its heyday and power. Under the Abbasids, Baghdad became not only the political, but also the cultural capital of the Caliphate. The famous House of Wisdom opens in Baghdad, where a large-scale translation activity has been carried out for centuries.The Abbasids achieved amazing success because they were able to absorb the rich cultural traditions of the peoples they conquered. At the same time, they pursued their own political goals - the strengthening and development of the Arab Caliphate. The Abbasids were not pioneers in translation, they skillfully used and developed the pre-Islamic developments of the Iranians in this area. It is important to study the reasons why the Arab Caliphate at one time reached historical heights. This is necessary in order for the lessons of the past to serve the good of the present.