A states' rights are rights that the state has that the Federal Government should not infringe upon.
For example, every state has a right to make its own laws. The Federal Government cannot force that state to not make a law it doesn't like unless the law violates Federal law.
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Answer:
I believe that "a biography of John F. Kennedy" and "a letter written by Thomas Jefferson to the British monarch" go in primary and the other two go in secondary.
William Few and Abraham Baldwin