Complex sentence: The University of the Mediterranean Aix-Marseille II is one of the University of Aix-Marseille based across the the communes of Aix-en-Provence and Marseille in southern France.
Split into simpler sentences: The University of the Mediterranean Aix-Marseille II a French university in the Academy of Aix and Marseille. Historically, it was part of the University of Aix-Marseille based across the the communes of Aix-en-Provence and Marseille in southern France.