Herzegovina
Herzegovina ( or ; Serbo-Croatian: "Hercegovina", Херцеговина, ) is the southern region of Bosnia and Herzegovina. While there is no official border distinguishing it from the Bosnian geographical region, it is sometimes asserted that the borders of the region are Dalmatia to the southwest, Montenegro to the east, Mount Maglić to the northeast, and Mount Ivan to the north. Measurements of the area range from , or around 22% of the total area of the present-day country, to , around 24% of the country.
Kingdom of Bosnia
Throughout the Middle Ages, Herzegovina was made up of several smaller polities: Zahumlje (Hum), centered around the town of Blagaj, and Travunia, centered on the town of Trebinje. These statelets were in periods ruled by semi-independent princes, mostly under suzerainty of the Serbian medieval monarchy. Their territories included modern Herzegovina and parts of Montenegro and southern Dalmatia. The name Herzegovina was adopted when Stjepan Vukčić Kosača, the "Duke of St. Sava" asserted its independence in 1435–48. The assembly of these noblemen was called "stanak" and was quite influential.