Complex sentence: Algiers, Constantine, and Oran--had Jewish populations of over 7%, as did many smaller cities such as Ghardaia and Setif; one smaller town, Messad, had a Jewish majority.
Split into simpler sentences: Algiers, Constantine, and Oran--had Jewish populations of over 7%, as did many smaller cities such as Ghardaia and Setif. One smaller town, Messad, had a Jewish majority.