), sometimes called Bosnia-Herzegovina, and often known informally as Bosnia, is a country in Southeastern Europe located on the Balkan Peninsula. Bordered by Croatia to the north, and west; Serbia to the east; Montenegro to the southeast; and the Adriatic Sea to the south, with a coastline about 20 kilometres (12 miles) long surrounding the town of Neum.
In the central and eastern interior of the country the geography is mountainous, in the northwest it is moderately hilly, and the northeast is predominantly flatland.
However, the central government's power is highly limited, as the country is largely decentralized and comprises two autonomous entities: the Federation of Bosnia and Herzegovina and Republika Srpska, with a third region, the Brčko District, governed under local government.
The Federation of Bosnia and Herzegovina is itself complex and consists of 10 cantons.
A native of Bosnia and Herzegovina, regardless of ethnicity, is identified in English as a Bosnian.