The Great Plains is the answer
The correct answer is Great Britain and U.S.
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Answer:Also called the Elastic Clause, this clause allows Congress to decide how it should carry out the many powers given to it by the Constitution. In doing so, Congress has given itself implied powers not mentioned in the Constitution.
Explanation:
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The answer is A
Because a legend could be many things, but not disease related, the flu is a disease, and the Columbian Exchange was when Christopher Columbus brought things from the americas back to Europe and brought things from Europe back to the Americas