The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
To what extent are political disputes and conflicts in the Middle East rooted in sectarian differences, and to what extent does this sectarianism impact the socialization of members of the different sects?
Indeed sectarian differences have been affected the relationships of many Muslim countries in the Middle East to the extent that these differences have been the causes of many conflicts and even wars. These sectarian differences impact the socialization of members of the different sects in that they automatically turned into enemies, more than rivalries, and it has been difficult for these people to establish peaceful relations in the region.
For instance, that is the case of two important Muslim sects, Suni Muslims and Shia Muslims. If the religious differences are already a big issue, now the political problems have increased the differences between the two.
