CHAPTER VI THE KINGDOM OF JERUSALEM NINETEEN languages were spoken in the first Crusading army, but as the greatest number of the settlers spoke Norman French that language became the official language of the victors, though other languages lingered for many years. The Franks were great builders and erected many churches throughout Syria, but their most remarkable constructions were the fortresses, inspired by Arabian models and showing a trace of Byzantine influence, which they raised at strategic points. In 1115 Baldwin I built Kenik de Montreal, which controlled the caravan routes between Damascus, the principal market of the East, and Mecca, and his example was followed by later Kings of Jerusalem and the princes and barons, so that ultimately the Latin possessions were girdled by a circle of fortresses. In conjunction with these fortresses, some of which had a garrison of a thousand, a series of watch towers was erected. A garrison of a few men in these towers was sufficient to give warning to the parent fortress of any Moslem activities. Where the towers were within sight of the fortresses, signalling was usually by hand during the day and by beacon during the night, but the Franks also used carrier pigeons to convey information, having learned this method of communication from the Moslems at the end of the eleventh century. From the middle of the twelfth century, the Temple and the Hospital began to acquire fortresses and towers, some- times by purchase, sometimes by gift, and practically all of them were in the possession of the military Orders before the 86