Approximate borders between two modern-day regions of Bosnia and Herzegovina - Bosnia (marked dark brown) and Herzegovina (marked light brown)
|Country||Bosnia and Herzegovina|
|• Total||41,000 km2 (16,000 sq mi)|
|Time zone||CET (UTC+1)|
|• Summer (DST)||CEST (UTC+2)|
Bosnia (Bosnian: Bosna; Cyrillic: Босна; pronounced [bɔ̂sna]) is an eponymous region of Bosnia and Herzegovina. It encompasses roughly 80% of the country in the north, while the other eponymous region, the southern part, is Herzegovina. Bosnia is an informal use for the whole country.
The two regions have formed a geopolitical entity since medieval times, and the name "Bosnia" commonly occurs in historical and geopolitical senses as generally referring to both regions (Bosnia and Herzegovina). The official use of the name including both regions started only in the late period of Ottoman-rule.
The area of Bosnia comprises approximately 41,000 km², and makes up about 80% of the territory of the present-day state of Bosnia and Herzegovina. There are no true borders between the region of Bosnia and the region of Herzegovina. Unofficially, Herzegovina is south of the mountain Ivan planina.
De Administrando Imperio describes a small župa of Bosona (Greek: χωρίον Βόσονα) that was located around the river Bosna in the modern-day fields of Sarajevo and of Visoko. The area is thought to have been previously inhabited by the Illyrian tribe of the Daesitiates.
At the end of the 14th century, under Tvrtko I of Bosnia, the Bosnian kingdom included most of the territory of today's Bosnia and of what would later become known as Herzegovina.
The Ottoman Empire initially expanded into Bosnia and Herzegovina through a territory called the Bosansko Krajište. It in turn was transformed into the Sanjak of Bosnia and the Sanjak of Herzegovina after 1462/1463. The first Ottoman administration called Eyalet of Bosnia was finally formed in 1527, after long armed resistance to the north and to the west by Counts Franjo and Ivaniš Berislavić of the noble house of Berislavići Grabarski.
Eventually, following the Great Turkish War, in the 18th century the Eyalet came to encompass the area largely matching that of today's Bosnia and Herzegovina.
In 1833, the Eyalet of Herzegovina was temporarily split off under Ali-paša Rizvanbegović. The area acquired the name of "Bosnia and Herzegovina" in 1853 as a result of a twist in political events following his death. After the 1864 administrative reform, the province was named Vilayet of Bosnia, which in turn became the Condominium of Bosnia and Herzegovina in 1878.
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- Vladimir Ćorović, Teritorijalni razvoj bosanske države u srednjem vijeku, Glas SKA 167, Belgrade, 1935, pp. 10-13
- "Rethinking the territorial development of the medieval Bosnian state". Historical Review (Serbian Academy of Sciences and Arts - Institute of History) LI: 52–53. 2004. ISSN 0350-0802. Retrieved 2012-09-12.
- Ivan Mužić (December 2010). "Bijeli Hrvati u banskoj Hrvatskoj i županijska Hrvatska". Starohrvatska prosvjeta (in Croatian) (Split, Croatia: Museum of Croatian Archaeological Monuments) III (37): 270. ISSN 0351-4536. Retrieved 2012-09-12. "Bosna u obujmu, u kakvom se navodi u djelu DAI kao jedinstvena teritorijalna jedinica, protezala se, kako neki autori smatraju, na području u kojem su prije prebivali Desitijati (M. Hadžijahić). Ti Desitijati, koji su nastavali istočnu i srednju Bosnu počevši od Travnika prema Rogatici pa dalje, imali su središte oko današnje Breze. (Mandić 1942, str. 133.)"
- Pinson, Mark (1996) . The Muslims of Bosnia-Herzegovina, the Historic Development from Middle Ages to the Dissolution of Yugoslavia (Second ed.). United States of America: President and Fellows of Harvard College. p. 11. ISBN 0-932885-12-8. Retrieved 2012-05-06. "[...] in Bosnia Jajce under Hungarian garrison actually held until 1527"