Shirvan (from Persian: شروان > Azerbaijani: Şirvan;), also spelled as Shirwan, Shervan, Sherwan and Šervān, is a historical region in the eastern Caucasus, known by this name in both Islamic and modern times. Today, the region, an industrially and agriculturally developed part of Azerbaijan that stretches between the western shores of the Caspian Sea and the Kura River and is centred on the Shirvan Plain.
Read more about Shirvan: Medieval History and Etymology, Modern History Up To Azerbaijan S.S.R, People and Culture