Final answer:
The purpose of the National War Labor Board (NWLB) during World War I was to settle disputes between owners and labor unions.
Step-by-step explanation:
The purpose of the National War Labor Board (NWLB) during World War I was B. to settle disputes between owners and labor unions. The NWLB was established in April 1918 to help prevent labor strikes that could disrupt war production. It aimed to mediate conflicts and ensure fair wages, working conditions, and hours for workers.
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