Mustawfi Qazvini's 14th-century description of Sharazur

Several theories, including humorism and the theory of climes, were applied to regions and countries in premodern writings. The Kurdish territories were traditionally categorized as belonging to the fourth clime of the inhabited world. Qazvini in the 14th-century writes: 

Shahrazūr. Of the Fourth Clime, in longitude 81° 20', and latitude 34° 20'. This town, of old, was called Nīm-Ardah, being the half way stage between Madain and the Fire-temple of Adharbayjan. It was built by king Qubad the Sassanian. In the Suwar-al-Aqālīm it is said that this place is named Shahr-zūr (City of Strength) because its governors are always of the Kurds, and he whose strength was greater became the governor.