However, this period of prosperity did not last. The Black Death is said to have been imported into Europe in 1347 from the Genoese trading post at Caffa in Crimea on the Black Sea. Following the economic and population collapse that resulted, Genoa adopted the Venetian model of government and was presided over by the Doge of Genoa. The wars with Venice continued, and the War of Chioggia (1378–1381) – during which Genoa almost managed to decisively subdue Venice – ended with Venice's recovery of dominance in the Adriatic. In 1390, Genoa initiated the Barbary Crusade, with help from the French, and laid siege to Mahdia, the Fatimid capital of Ifriqiya.