Austro-Hungarian rule in Bosnia and Herzegovina power over the Catholic Church in Bosnia and Herzegovina, the Emperor established the cathedral in Sarajevo and named Archbishop Dr. Josip Štadler as its head. Just before the occupation of Bosnia and Herzegovina, the Croatian Sabor asked the Emperor to alter the situation in Bosnia and Herzegovina so it could be unified with the Kingdom of Croatia-Slavonia and the Kingdom of Dalmatia. The Emperor refused to accept this demand and dismissed the Sabor. This was done as the Austrian-Hungarian authorities had a plan to isolate Bosnia and Herzegovina from its neighbouring Slavic countries, Croatia and Serbia, and to halt the
Croats of Bosnia and Herzegovina would include a federal unit with a Croatian majority. It remains the permanent aspiration of the Croatian people of Bosnia and Herzegovina." Currently, there are several Croatian political parties in Bosnia and Herzegovina, many corresponding to parties within Croatia itself. The Croatian Democratic Union of Bosnia and Herzegovina (HDZ BiH), Croatian Democratic Union 1990 (HDZ 1990) are the most popular parties. HDZ was founded in 1990 and is major political parties among Bosnian Croats, being the most powerful during the Bosnian War (1992–1995) and existence of the Croatian Republic of Herzeg-Bosnia (1991–1994). HDZ is Christian democratic, conservative and pro-Europeanist political