Tunisian Couscous Salad with Pine Nuts & Barberries

Tunisia was once part of the ancient city state of Carthage, which fell to the Romans in 146 bce. The Romans valued it for its mines, quarries and fisheries; for its long Mediterranean shoreline; and especially for its rich agriculture: The land still produces wheat, olives, dates and citrus. The Romans called the region Africa; the Arabs, who conquered it in the seventh century, called it (with Algeria and Morocco) Jazirat al-Maghrib, meaning “islands of the west.” In 777 a Persian, Ibn Ro