Answer:
The correct is no. 4) The Arab Empire unified feuding tribes under the religion of Islam.
Explanation:
Historically, North African culture was very different from that of Arab Lands. North Africa mostly consisted of Berber people, a separate ethnicity with their own language, laws and traditions.
When the Arab Empire conquered North Africa (modern countries of Libya, Tunisia etc) they brought with them not only a new language but a completely new religion.
Within a couple of decades, many locals had converted to Islam due to active missionary work. Feuding tribes in the local area, who had numerous differences, found a single religion as a uniting force.
