If one will read the above paragraphs with a map before him, he will readily see that this country, the extreme north-western corner of Asia Minor, corresponds roughly to the borderland between the Roman provinces of Phrygia Epictetus and Bithynia, and is near to Constantinople. Eski Sheïr, Sugut, and Biledjik are close to Brusa, Nicaea, and Nicomedia. Owing to the convenient waterways furnished by the Gulfs of Mudania and Ismidt, Brusa, Nicaea, and Nicomedia have always been within a day’s sail of Constantinople, even in the periods of primitive navigation. From the hills behind Eski Sheïr, Mount Olympus is the commanding landmark of the western horizon. From Constantinople, Mount Olympus is easily distinguishable even in dull weather. It was this country, adjacent to Constantinople, and separated from the rest of Asia Minor by rugged mountain ranges and the dreary, treeless plateau stretching eastward towards the Salt Desert, which gave birth to the people who, a century after their appearance, were to inherit the Byzantine Empire and to place their sovereigns upon the throne of the Caesars. II At the end of the thirteenth century, Asia Minor, so long the battleground between the Khalifs and the Byzantines, almost entirely abandoned by the latter for a brief time to the Seljuk emperors of Rum, who had their seat at Konia, then again disturbed by the invasion of the Crusaders from the west and the Mongols from the east, was left to itself. The Byzantines, despite (or perhaps because of!) their re-establishment at Constantinople, were too weak to make any serious attempt to recover what they had lost to the Seljuk Turks. The Mongols of the horde of Djenghiz Khan had destroyed the independence of the Sultanate of Konia, and had established their authority in that city. But they made no real effort to bring under their dominion the districts north-west and west of Konia to which they had logically fallen heir. At the beginning of the fourteenth century, we find two Christian kingdoms, Trebizond and Little Armenia, or Cilicia, at the north-eastern and south-eastern extremities of the peninsula. In the north-western corner, the Byzantines retained Philadelphia, Brusa, Nicaea, Nicomedia, and the districts in which these cities were located--a narrow strip along the Hellespont, the Sea of Marmora, and the Bosphorus. Asia Minor, without even a semblance of centralized authority, was to him who could gain and who could hold.