Who recognized Mu'awiya as Caliph after the assassination of Ali?
His Syrian supporters and his ally Amr ibn Al-As
His father Abu Sufyan
The Qurayshi tribe
The Banu Hashim tribe
Answer
After Ali was assassinated, his Syrian supporters and his ally Amr ibn Al-As recognized Mu'awiya as Caliph. Mu'awiya was the governor of Syria at the time of Ali's death, and he was able to take advantage of the chaos and confusion that followed Ali's death to consolidate his power.
Mastering Mu'awiya I: Unlocking the Legacy of the First Umayyad Caliph