Constantinople, only the high prestige of the Padishah linked these scattered villages in their loosely organized provinces.
South of Asia Minor, the mountains dipped into a great desert arched by the Tigris-Euphrates basin on the east and by the green Syrian corridor on the west. Here, except in the Syrian corridor, the inaccessibility of the country from Constantinople and the nomadic nature of its sparse population gave the provincial administrations a degree of semi-independence which increased to complete independence down in the Arabian peninsula. The case of the Syrian corridor was exceptional, however. Compared with the distant Tigris-Euphrates basin, it was easily accessible from Constantinople; it was the home of a settled population with a very high culture of its own; and it was on the only line of land communication with the most venerable holy places of Islam, the Haram-esh-Sherif at Jerusalem, the Prophet's Tomb at Medina and the sacred Kaaba at Mecca. The first of these lay at the southern end of the corridor and the other two amid the arid mountains which parallel the Arabian coast of the Red Sea.
Over these 600,000 square miles of country, the Sultan at Constantinople maintained the loosest sort of government, permitting his subjects to conduct their own affairs largely in their own ways and confining his administration to the task of keeping the trade routes open and the taxes collected, for under the Eastern tradition this was the whole duty of government. There were about 25,000,000 of his subjects, the overwhelming majority of them Moslems. The great Moslem reformation had swept
