4- Uqba Ibnu Naafi' returned to lead the fourth conquest: After four years, i.e. in 50 A.H/670, the Khalif decided to give the supreme command to the great leader Uqba Ibnu Naafi' who entered Tunisia leading an army of ten thousands soldiers (10000). He then built the city of Kairouan in 55 A.H/674.

5- Dinar Abu al-Muhaajir the leader of the fifth conquest: In 55 A.H Mua'wiya Bnu Abee Sufyaan discharged Uqba Ibnu Naafi' of the leadership of the army and put in his place Dinar Abu al-Muhaajir who arranged at once a military expedition under his command. He advanced to the mountains of al-Awraas, strongholds of strong and courageous Moroccans whom the Byzantine and before them the Romans failed to subdue. They gave them self-autonomy in return for their loyalty to the Roman Empire. The Amir of the Moroccans at the time was a man called Kusaylah who was the chief of the tribe of Awraba. He enjoyed a huge influence among his people. However, Abu al-Muhaajir managed to defeat him in 67 A.H. Kusaylah escaped but Abu al-Muhaajir chased him until he pretended to embrace Islam in order to escape death. Abu al-Muhaajir, though, believed him and took him as guide to obtain information about the country and its people. The task of Abee al-Muhaajir finished because the Islamic conquest reached only Algeria during the reign of Mua'wiya Bnu Abee Sufyaan. As for Morocco, its conquest started only during the reign of the second Ommiad Khalif, Yazid Bnu Mua'wiya.

6- Uqba Ibnu Naafi' the leader of the sixth conquest: In 61 A.H Yazid Bnu Mua'wiya appointed Uqba Ibnu Naafi' back as leader of the army for the conquest of North Africa. As mentioned before, Abu al-Muhaajir managed to secure the friendship of Kusaylah and his people who embraced Islam, though it seemed unwillingly. However, when Uqba Ibnu Naafi' advanced toward the west, he was informed that the Byzantine formed a new alliance with the Berbers in order to stop the Islam moving forward. Nonetheless, this conspiracy did not create any form of danger for Uqba Ibnu Naafi' and his army. He defeated them and split their throngs like a lion, and chased them to the mountains, castles and fortress. As a result, the Berbers became more fascinated by his courage and, accordingly, embraced Islam willingly. Uqba Ibnu Naafi' continued his march toward Sebta and Tangier passing by the Atlas mountains, Tafilalt and then to the West, penetrating the tribes of Sanhaajah and Sous till he found himself in front of the Atlas Ocean, he said: "O Allah I did not come this far out of arrogance, and You know that I am after the same reason as were Your slave Dhul Karnayn, that You will be worshipped Alone with no associate. By Allah, if I know that there is a land behind this ocean, I will rush into it for Your sake". Unfortunately, when Uqba Ibnu Naafi' was on his way back, Kusaylah, who was concealing a profound hatred for him because he had been maltreated by Uqba Ibnu Naafi', prepared an ambush for him. With the help of the Byzantine, He massed troops from the tribes and clashed with Uqba Ibnu Naafi' in a sudden battle near the river of al-Abyud. Uqba Ibnu Naafi' died a martyr and the army suffered a heavy blow because of his death. The battle took place in 65 A.H/684. However, the Moroccans who tasted the feeling of Islam did not apostate.

7- Zuhayr Bnu Qays al-Balawi, the leader of the seventh conquest, killed Kusaylah 67 A.H/686: While the Mujahidun were gathering their strength and concentrating their troops in Barqah (Libya), Abdul Malik Ibnu Marwaan was anxious about the war raging between al-Hajjaaj Bnu Yusuf and AbduAllah Bnu Zubayr. However, Abdul Malik did not neglect the situation in Morocco and he decided to avenge Uqba IBnu Naafi'. He appointed Zuhayr Bnu Qays al-Balawi as leader for this new conquest of Morocco. This latter advanced toward the West and rushed into a decisive battle which ended by the killing of Kusaylah in 67 A.H/686, and the defeat of the Byzantine naval forces and their deportation from the Islamic coasts. Unfortunately, this battle also witnessed the death of Zuhayr Bnu Qays al-Balawi as martyr. He followed the caravan of martyrs who sacrificed their purified bloods for the benefit of Islam in Morocco.

8- Hassaan Bnu an-Nu'maan lead the eighth conquest 72 -85 AH/691-704: After Abdul Malik Bnu Marwaan had managed to quell the riots and rebellions and establish peace once again, he chose Hassaan Bnu an-Nu'maan al-Ghassa'ni to lead a huge army of forty thousands (40000) in order to complete the conquest of Morocco. Hassaan Bnu an-Nu'maan marched with his army and conquered the mountains of al-Awraas in 72 A.H/695 after he had subdued the resistance and settled his account once for all with the Quartajiyyeen (Carthage). Afterwards, all the Moroccan tribes surrendered and rushed to join the Muslim army; and thanks to Hassaan Bnu an-Nu'maan Morocco became an Arab country. It seemed that Hassaan Bnu an-Nu'maan succeeded in his assignment by adopting a policy of 'kindness but firmness' after the battle. He also built a shipyard which called "Daar as-Sina'a". More important, he disseminated the Islamic Aqeedah (faith) and built mosques for teaching Arabic language and Qur'an. Hassaan Bnu an-Nu'maan remained a faithful leader of North Africa till he was replaced by Musa Bnu Nusayr in 85 A.H/704. Truly, he was one of the greatest conquerors and administrators in the Islamic history.

9- Musa Bnu Nusayr 85-95/704-714: He did not encounter any difficulty in subduing the Berbers because all the previous Muslim leaders had done the hard works. However, he managed to win over Julian al-Ghimari and put Tariq Bnu Ziyaad in charge of Tangier; and his army reached the south of Morocco (Dar'ah). Then, he thought about conquering Spain by request of Yulyaan who felt a personal animosity towards Ludrik, the king of Spain. Eventually, Musa Bnu Nusayr advanced towards Spain in 92 A.H/711 under the leadership of Tariq Bnu Ziyaad.