Complex sentence: They later allied with the Banu Hillal and entered under their protection, which enabled them to wander in the Moroccan Saharan wolds between Moulouya River and the Tafilalet oases.
Split into simpler sentences: They later allied with the Banu Hillal and entered under their protection. Which enabled them to wander in the Moroccan Saharan wolds between Moulouya River and the Tafilalet oases.