Answer: The unwritten constitution.
Step-by-step explanation:
The unwritten constitution refers to the rules followed by our government that are acknowledged as a vital component of the system but they are not really in the Constitution. These are practices that have been done in a certain way for so long that many people think they are laws.
For example, the formation of a cabinet to advise the president is a precedent set by George Washington, neither required nor suggested by the Constitution.