Complex sentence: The city of Cediæ, at the site of modern Oum-Kif, in present Algeria, was important enough in the Roman province of Numidia to became one its many suffragan sees, but like most faded.
Split into simpler sentences: The city of Cediæ was situated in modern Oum-Kif, in present Algeria. It was important enough in the Roman province of Numidia to became one its many suffragan sees, but like most faded.