Kurdistan (2,250), a stretch of plateau and mountain land in Turkish, Persian, and Russian Trans-Caucasian territory, consisting of grassy plains and lofty ranges through which rivers like the Zabs, Batman-su, and Euphrates force their way; is inhabited by a partly nomad, partly agricultural people of ancient stock, who export wool, gum, and hides; the Kurds retain their old customs and organisation, are subject to their own chiefs, impatient of the rule of the Porte and the Shah; predatory by instinct, but brave and chivalrous; they are Moslems and Nestorians.