To the east and to the west Andronicus II, utterly unable to defend himself, looked for aid. From this time on to the fall of Constantinople the history of the Byzantine Empire becomes what the history of the Ottoman Empire has been during the last hundred years. It is the story of an uninterrupted succession of bitter internal quarrels, of attacks by former vassals upon the immediate frontiers of its shrunken territory, of subtle undermining by hostile colonies of foreigners whose one thought was commercial gain, and of intermittent, and in almost all cases selfishly inspired, efforts of western Europe to put off the fatal day. In the east, Andronicus expected much of Ghazan Khan. Were not the Turks of Asia Minor vassals of the Mongol overlord? Andronicus sent envoys to Ghazan to offer him the hand of a young princess who passed at Constantinople as his natural daughter. Ghazan received them cordially, accepted the proffered marriage alliance, and promised to exercise a pressure upon the Turks of western Asia Minor.[51] This promise, however, was not followed by any serious action. The Mongols were never more than mere raiders in Asia Minor.[52] Before this marriage could be consummated, Ghazan Khan died. The young princess was offered to and accepted by his successor. It was a useless sacrifice. For in this first decade of the fourteenth century the long struggle between Christian and Moslem to win the Mongols ended, temporarily at least, in the conversion of the Khans to Islam.[53] From the west, Andronicus received aid of the most disastrous sort. When Ferdinand of Aragon made peace with Charles d’Anjou, King of Sicily, in 1302, he got rid of his troublesome mercenaries by sending them to serve the Byzantine Empire. Roger de Flor, typical soldier of fortune, who could not be matched in his generation for daring, insolence, rapacity, cruelty, and Achillean belief in his own invulnerability, arrived at Constantinople with eight thousand Catalans and Almogavares, the former heavy-armed plainsmen and mariners, the latter light-armed mountaineers of northern Spain. They were true prototypes of the soldiers of Alva and Cortes. Roger was made Grand Duke, and married to Princess Marie, niece of Andronicus. Almost immediately after their arrival, the Catalans became engaged in such bloody conflicts with the Genoese of Galata, and robbed and murdered the Greeks with such alacrity, that Andronicus hastened to turn them loose in Asia. Roger established himself in the peninsula of Cyzicus. Here his Catalans fell immediately to plundering the inhabitants of the country, who soon found that they had passed from Scylla to Charybdis, and carried heartrending tales of lust and greed and massacre to Constantinople.[54] The one Greek general who was doing anything noteworthy against the Turks was relieved of his spoils of war by Roger.