Lind's experiments at sea tested some potential cures for scurvy. His experiments were important because he discovered the use of citrus fruit as a cure for scurvy. It ranks as one of the first clinical experiments in the history of medicine.
Federalism is the system of government in which power is divided between a central government and regional governments; in the United States, both the national government and the state governments possess a large measure of sovereignty.
D Rosetta Stone
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