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
Bosnia and Herzegovina–Croatia relations Bosnia-Herzegovina sovereignty. Six years later, the Croatian government called for the ratification of this agreement; however, as of 2007, it was not ratified. The two countries negotiated Neum Agreement and Ploče Agreement defining special arrangements for Croatian transit traffic through Neum and Bosnia and Herzegovina access to the port of Ploče to compensate for non-contiguity of Croatian territory between Ploče and Dubrovnik and lack of a seaport in Bosnia and Herzegovina. Recently Croatia has opted to build a bridge to the Pelješac peninsula to connect the Croatian mainland with the exclave as part of the A1 motorway Zagreb–Dubrovnik, but Bosnia