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
Ravno, Bosnia and Herzegovina to attack Dubrovnik in the Croatian War of Independence. Ravno again suffered heavy damage during the War in Bosnia and Herzegovina, when the majority of villages were destroyed. The area around Ravno was used as a corridor from where Dubrovnik county in Croatia was continuously attacked. Ravno, Bosnia and Herzegovina Ravno is a village and municipality located in Herzegovina-Neretva Canton of the Federation of Bosnia and Herzegovina, an entity of Bosnia and Herzegovina. Ravno was a separate county until 1963, when it became a part of the Trebinje municipality. In 1994, the border changed and Ravno became a municipality again.