National unions differed from local unions in that national unions represented the interests of laborers and workers from all over the country, as opposed to a specific region.
Generally speaking, in a cost-benefit analysis done by a government, “cost” is defined as the negative aspect of what will happen if the government decides to go through with whatever they're debating. It's what the government will lose as a result of this action.
One of the reasons that some did city-states in the Delian League revolted against Athens is because "<span>A) They resented not having a say in the government" since the heart of the government lay in the Athenian Democracy.
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