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Which one of the following expressions is the correct representation for the speed of light in vacuum?
National Roads
Major highways constructed and maintained by a national government, often significant for economic development and national security.
Hard Money
Referred to gold and silver currency—also called specie.
Specie
Coins made from precious metal and used as a medium of exchange; distinct from paper currency.
Panic of 1837
A financial crisis in the United States that led to a major recession lasting until the mid-1840s, triggered by a speculative fever and failure of banks.
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