During the supremacy of the Barbary Coast pirates in the 16th and 17th centuries, Formentera was so vulnerable it had to be abandoned, and it wasn't resettled until the 18th century.
The pirates reigned supreme over everyone of the Barbary Coast.
mnli hypothesis: The pirates reigned supreme over everyone of the Barbary Coast. premise: During the supremacy of the Barbary Coast pirates in the 16th and 17th centuries, Formentera was so vulnerable it had to be abandoned, and it wasn't resettled until the 18th century.