Turkey in Asia is more extensive, and stretches from the Black Sea to the Persian Gulf. Persia lies to its east, and the Red Sea and blue Mediterranean to its west. Turkey holds sway over some of earth's fairest lands, the homes of its most ancient civilizations and lands familiar to us through Holy Writ and profane history, and the sources of Jewish, Christian, Moslem, and other beliefs. The rulers of Turkey are the Turks, originally a nomadic tribe from Central Asia. Compelled to abandon their homes on account of the desiccation or drying up of large tracts of their country, which were converted into a desert, they swarmed into Armenia and Persia in quest of new pasture-lands for their flocks and cattle. Like the in-coming tide, they swept everything before them, and finally overwhelmed, not only Asia Minor, but also Egypt and Northern Africa. Converted at an early stage of their history to the Mahomedan faith, they propagated it wherever they went, and, under the leadership of the Sultans of the Seljuk dynasty, they established themselves in Konia, and advanced their rule to the gates of the Byzantine Empire. But it was reserved for a kindred tribe under Ertogrul to be the successors of the Seljuks and establish the Ottoman dynasty which still holds sway over Turkey. The events leading up to it were as follows: Ertogrul, with a band of 400 followers, was wandering about Asia Minor, and accidentally came across a conflicting Mongolian and Seljuk army in the neighbourhood of Angora. He dashed into the fray in support of the latter, and changed impending defeat into a brilliant victory. In reward for this timely assistance the Seljuk Sultan awarded to Ertogrul the district of Anatolia, which bounded the Greek or Byzantine Empire, the capital of which Empire was then Constantinople. During the summer the new-comers drove their flocks to the mountains, and during the winter they withdrew them to the plains, but, growing bolder and more powerful, Ertogrul waged war against the Greeks. Success followed upon success, until at last, in 1326, under the leadership of Othman, the son of Ertogrul, Nicea, noted for its Council which drew up the Nicean Creed, fell to the sword of the Moslem. Brusa also was taken, and there Othman enthroned himself as Sultan of the dynasty thenceforth known as the Ottoman.