Sarajevo is the capital city of Bosnia and Herzegovina, which was a condominium under Austro-Hungarian rule after the annexation in 1908. This region became a focal point of tension in the lead-up to World War I, as the competing nationalisms and aspirations of its diverse ethnic groups clashed with imperial interests. The assassination of Archduke Franz Ferdinand in Sarajevo in 1914 triggered a chain of events that ultimately led to the outbreak of World War I.