The following outline is provided as an overview of and topical guide to Bosnia and Herzegovina: Bosnia and Herzegovina – country in Southwestern Europe, on the Balkan Peninsula. It 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 country is home to three ethnic groups: Bosniaks are the largest group of the three, with Serbs second and Croats third.