Answer:
A or D or both
Explanation:
It says, "Nationalism is a strong feeling of support for one's nation. The support can mean to be proud of one's country and to want it to be the richest and most important country in the world. Nationalism caused many problems among European countries in the years before World War I", so it is logic that the Europeans were afraid that other countries would gain more power if they lost and of course they want to super powerful.
That's a hard one to answer but from all my reading it would seem there was one main reason. The Berbers were nomads so they never were able to be collectively together to form an army against invaders. Therefore, the Berbers were constantly being conquered by someone. Each time they had to learn new laws set out by the conquerors. When the Arabs came with their mighty army, they knew they couldn't fight so giving in was in an odd way a protection system of kinds.