McCulloch v. Maryland (1819) is one of the first and most important Supreme Court cases on federal power. In this case, the Supreme Court held that Congress has implied powers derived from those listed in Article I, Section 8. The “Necessary and Proper” Clause gave Congress the power to establish a national bank.
We, the United States of America purchased the Louisiana Territory for 2-3 cents per acre resulting in a total of 15 million dollars. The land was originally owned by France and then the United States bought it.
I think they established a treaty
