Old Herzegovina (in Montenegro)
Old Herzegovina is a historical region in Montenegro, which is not part of Bosnia and Herzegovina. East Herzegovina : Foča, Kalinovik, Goražde), and Serbia (Prijepolje). The name comes from the medieval Great Herzog of St. Sava, established by Grand Duke Stefan Vukčić Kosača, within the Kingdom of Bosnia. The largest city in this region is Nikšić, and the second-largest is Herceg Novi.
Until the Congress of Berlin in 1878 the Old Hercegovina was part of Bosnian Pashalik (in Ottoman Empire), but since then merged into Principality of Montenegro (most part) and other enumerated countries. Relief in the First Balkan War and the Treaty of Peace (London, 30 May 1913) as an inseparable part of Old Herzegovina, Pljevlja included in the composed on the Kingdom of Montenegro.