sentences:  Cagliari remained Roman Catholic despite the Arianism prevalent at the time and many African bishops fled the Arian Vandals to come to Cagliari.At the time of the Second Council of Constantinople (681), Cagliari was already a metropolitan see.It has been suggested that in the 10th and 11th century as the "giudicati" of Sardinia became independent, the archbishop of Cagliari became the "de facto" theocratic ruler of the island through the Corona de Logu.