Palestine, History Of, The Crusades

A year after the capture of Jerusalem by the crusaders, the Latin kingdom of Jerusalem was established (Christmas Day, 1100). Thereafter, there was no effective check to the expansion of the crusaders' power until the capture of their stronghold at Edessa (modern Urfa, Tur.) by the atabeg of Mosul, 'Imad ad-Din Zangi ibn Aq Sonqur, in 1144. Zangi's anticrusader campaign was carried on after