The PhD thesis entitled: The Work of Bačka Croats in the cultural institutions of the Independent States of Croatia (ISC/NDH), author of the available archival materials, is interdisciplinary layered view of socio-historical conditions within the ethnic community Bačka Bunjevac-Croats and their relationships with cultural institutions in Zagreb. Attention is focused on lesser-known historiographical research in the period 1941. to 1945/48. Author analyzes the processes within the Croatian ethnic community from the area of Bačka before, during and after the World War II. Bačka Croats in these historical circumstances, pass through the complex processes of national and cultural integration and transformation of their own ethnic communities in the Croatian nation. Period Second World Wars is insufficiently researched historiographical issue in terms of comprehensive consideration of cultural and national-integration process of the constitution, reproduction, transformation of marginal and apart Croatian ethnic community. Therefore, in the period 1941 to 1945 due to strong pressure Hungarian totalitarian regime against members of the Croatian community in Bačka comes to the process of disintegration of the Croatian community which has resulted in partial migration of the Croatian population by NDH territory. Part of Croatian refugees from Bačka intellectuals at the time welcomed the establishment of the new Croatian government and partly cultural project working with organizations. The author emphasizes that the processes of disintegration and partly continued after the Second World War. The author concluded that the immediate postwar period in Bačka in 1944/45-1948 is the end of the impact of pre-war and wartime Croatian civil elite, the conservative Christian-social, and democratic-liberal worldview, or as in the ends of Third period Bunjevac-Croatian revival.