Answer:
"The lure of new, high-paying, high-skill manufacturing jobs"
Explanation:
Towards the end of the 1800s, the United States of American economy moved or transitioned away from agriculture to an industrial economy.
It's evident through many railroad construction and the western territory expansion which led to more jobs, business, and manufacturing of goods.
The general consensus amongst historians is that the balance between Federal and State powers was done to appease those who were afraid that too strong of a federal government would be no different than the monarchy that the colonists were overthrowing.
People traveled freely between east and west Germany.
It lowers costs because it encourages competition