It brought religious unity to the colonies
Answer:
The American Revolution, while not often called a civil war by modern historians, was referred to as a civil war in its first year, until William Henry Drayton, South Carolina's chief justice, first used the term "American Revolution" in 1776. One major difference between the two terms is length.
It is the "Great Chain of Being"--derived from the thinking of Plato and Aristotle-- that recognizes God as the ultimate authority in government and law, and of course over all humans and animals.
The federal legislature or congress can repeal the state laws under the necessary and proper clause in order to impose federal laws necessary to provide general welfare and common defense of the nation because they have the authority to do so. This authority was given to them because the people believed that the congress would decide for the common good.
Moreover, only the federal legislature has the right to contract debts, lay taxes and if they believed that a state law may prevent the collection of a federal tax, then they can repeal state laws making sure that it is for the benefit of the United States.