Final answer:
The terror group that formed during the Syrian Civil War and is a branch of Al-Qaeda is Al-Qaeda in the Lands of the Islamic Maghreb (AQIM). They have been carrying out acts of terror and violence against the Algerian government and people in the region.
Step-by-step explanation:
The terror group that is a branch of Al-Qaeda and formed during the Syrian Civil War is known as Al-Qaeda in the Lands of the Islamic Maghreb (AQIM).
AQIM is an insurgent group that joined forces with Osama bin Laden's Al-Qaeda group.
They have been carrying out acts of terror and violence against the Algerian government and people in the region.