The correct answer is: D
The National Labor Relations Board (NLRB) is an independent federal agency that governs relationships between businesses, unions and workers. Investigate and provide solutions to illicit practices committed by companies and unions.
The technology, logistics, and communication of the north that allowed them to defeat the south is because of their skill of having to manufacture supplies and weapons that they need for the war. They were able to create more weapons and be able to hire more soldiers.
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