Look at the table of dynasties.
Dynasty Achievement
Sasanian maintained Mesopotamian culture
Umayyad ?
Abbasid made Baghdad a cultural capital
Safavid helped Persian culture thrive
Which description can replace the question mark?
Responses
expanded the Muslim empire to its greatest extent
expanded the Muslim empire to its greatest extent - no response given
translated the Quran into the most foreign languages
translated the Quran into the most foreign languages - no response given
completed the conquest of the Byzantine empire
completed the conquest of the Byzantine empire - no response given
introduced Islam into the Indian subcontinent