Original sentence: Although the majority of the Arab World is Muslim the overwhelming majority of Arab Americans, or some 65%, are Christians, while only 25% are Muslims, and the remaining 10% are of other faiths, agnostics or atheists
Edited sentence: Although the majority of the Arab World is Muslim, due to centuries of persecution and subsequent waves of emigration,  the overwhelming majority of Arab Americans, or some 65%, are Christians, while only 25% are Muslims, and the remaining 10% are of other faiths, agnostics or atheists