The ability to borrow money A Concurrent Power
Supremacy clause
An Enumerated Power
A Denied Power

It is a concurrent power, both state and federal gov can do it

Explanation:

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )    

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.