The Croatian people originally lived in the Carpathian region (W. Ukraine) and in the early 600s migrated to their present homeland in the Balkans on the eastern coast of the Adriatic sea. They were evangelised and baptised by priests from Rome in the 600s, and therefore became part of the Latin-speaking western Catholic church centred in Rome (as opposed to the eastern Orthodox church with its headquarters at Constantinople). The initial "conversion" of the Croats probably focused on the elite, and it was only during the course of later phases of Christianisation that the Croats were fully Christianised. Reorganisation of church jurisdictions under the Franks brought the Croatian church under the jurisdiction of the Patriarchal see of Aquileia. Croatia became a kingdom in 925 and fought wars with Bulgaria. Croatia reached its height under king Petar Kresimir IV (1058-1074/5). In the 1102, Croatia and Hungary were ruled by the Hungarian king Coloman. Croatia was invaded by t...