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.
Herzegovina
Parts of the region were later ruled by various medieval rulers, with the eastern part mostly within Medieval Serbia, and the western part in the Kingdom of Croatia. Bosnian Ban Stjepan II Kotromanić and King Tvrtko I Kotromanić joined these regions to the Bosnian state in the 14th century.