Croats of Bosnia and Herzegovina Dalmatian Croatia formed a united Croatian kingdom, which included Dalmatia and part of Bosnia and Herzegovina, Pannonia (eastern Slavonia and northeastern Bosnia), and Savia (western Slavonia). In 1102 Croatia entered into a union with the Kingdom of Hungary. After this, Bosnia, which was earlier part of the Kingdom of Croatia, started to disassociate with Croatia. At first, Bosnia became a separate principality under Ban Kulin who managed to solidify Bosnian autonomy at the expense of more powerful neighbours, but only in the 14th century did Bosnia become a formidable state. In the 14th century, King Tvrtko I conquered part of
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