It would be the "Necessary and Proper Clause" that establishes many implied powers of Congress, since this allows Congress to do whatever is "necessary and proper" to keep the United States functioning.
Answer:
Panama
Explanation:
The panama canal was built as a connection between the atlantic and pacific
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Earth's mass has remained constant, and thus the gravitational pull at the surface has decreased over time; Earth's mass has grown with the volume in such a way that the surface gravity has remained constant; Earth's gravity at its surface has increased over time, in line with its hypothesized growing mass and volume.
Pretty sure Taxes helped out a lot
Initiatives and referendums were not passed during the Progressive Movement to increase democracy. = C)