Complex sentence: Between 1941-44, during the Axis occupation of Yugoslavia, it belonged to the Independent State of Croatia, and since 1945, it was part of the People's Republic of Croatia within new Socialist Yugoslavia.
Split into simpler sentences: Between 1941-44, during the Axis occupation of Yugoslavia, it belonged to the Independent State of Croatia. From 1945 onward, it was part of the People's Republic of Croatia within Socialist Yugoslavia.