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D. Helped strengthen the power of the federal government.
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One of the major ways in which the Black codes attempted to reimpose bondage on former slaves was through making it much harder for them to vote in elections. It also limited their social and economic mobility through segregation.
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What You Need To Know About The British Naval Blockade Of The First World War. During the First World War, Britain intended to use its powerful navy to starve Germany and Austria-Hungary into submission. By maintaining a blockade of enemy ports it hoped to cut off supplies from the outside world.
Explanation: