What was the implied powers clause of the U.S. Constitution used to justify?

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The establishment of the Bank of the United States in 1791 was justified by the implied powers cause of the U.S. Constitution. The implied powers clause, embedded in the elastic clause in Article I Section 8 of the U.S. Constitution, states that Congress is free to make laws that are deemed "necessary and proper" in order to properly carry out its duties. Hamilton used this clause to establish the Bank of the United States and later when Thomas Jefferson purchased the Louisiana Territory.

What Was the Implied Powers Clause of the U