Demographic history of Bosnia and Herzegovina of Catholic preachers. Preottoman Catholic population had a great share in the emigrations from Bosnia and Herzegovina. The emigration flows were directed towards Dalmatia, Croatia, Slavonia, Baranja and north-west Bačka. The western part of today's region of Bosnia, today known as Bosnian Krajina, was taken by the Ottomans in the 16th century, and was for some time still known as "Turkish Croatia", as its once overwhelming Catholic and Croat majority disappeared and the Ottomans entrenched the new border along the Sava and Una rivers. After more than a century of military losses, the Habsburg Empire waged some victorious wars against
Bosnia and Herzegovina–Croatia relations at providing a regional economic uplift. One of such projects is the widening of Pan-European Corridor Vc (E73) to freeway standards. Although extending to the Adriatic Sea all the way from Budapest, the capital of Hungary, Corridor Vc (in Bosnia and Herzegovina designated as A1) is purported to bear most importance for Bosnia and Herzegovina as its longest turnpike (at ) and a national project of sorts. It passes through Croatia at two stretches: one in eastern Slavonia near Osijek and Đakovo (A5) and the other at the coast near Ploče and Metković (A10). Croatia and Bosnia and Herzegovina have