A. Al-Mu'tasim
B. Al-Musta'sim
C. Al-Mansur
D. Harun al-Rashid
Answer: Al-Musta'sim
Who was the last Abbasid Caliph before the Mongol invasion of Baghdad in 1258?
Additional Information: Al-Musta'sim was the last Abbasid Caliph who ruled until the Mongol invasion of Baghdad in 1258.
Subjects: Famous Islamic Personalities, Islamiyat