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Answer:
The war remained unresolved for families with relatives who were prisoners of war or missing in action.
Step-by-step explanation:
The phrase "The war remained unresolved for families with relatives who were prisoners of war or missing in action" suggests that even after the war ended, there were still families who did not have closure regarding the fate of their loved ones who were either prisoners of war or missing in action.
This means that they did not know whether their relatives were alive, dead, or what had happened to them.