what brought an end to islams golden age?\nmuhammads death\njustinians rule\nthe umayyad dynasty\nthe mongol…

Brief Explanations:

The Islamic Golden Age was a period of cultural, economic, and scientific flourishing in the Islamic world. Muhammad's death occurred in 632 CE, long before the Golden Age (which is generally considered to be from the 8th - 14th centuries). Justinian was a Byzantine emperor (ruled 527 - 565 CE), and his rule had no direct connection to ending the Islamic Golden Age. The Umayyad Dynasty (661 - 750 CE) was a predecessor to the Golden Age. The Mongol invasion, specifically the Siege of Baghdad in 1258 CE by the Mongols under Hulagu Khan, which destroyed the Abbasid Caliphate (a major center of Islamic civilization during the Golden Age), is widely regarded as a significant event that contributed to the end of the Islamic Golden Age.

Answer:

the Mongol invasion