Al-Musta'in, Caliph (Tahirid Dynasty) : All Data

Al-Musta'in was the Caliph of the Arab Caliphate from 863 to 866. During his reign, the Arab Caliphate faced several significant conflicts. In 863, the Caliphate was engaged in the Byzantine-Arab Wars, which had been ongoing for centuries. In 864, the Caliphate also faced internal revolts, such as the Zanj Rebellion in Iraq, which lasted until 866. Al-Musta'in's rule was marked by these tumultuous events, as he navigated both external and internal challenges to maintain control over the Arab Caliphate.