The Ninth Amendment, or Amendment IX of the United States Constitution is the section of the Bill of Rights that states that there are other rights that may exist aside from the ones explicitly mentioned, and even though they are not listed, it does not mean they can be violated.
"In 768 Charlemagne became king of the Franks. He fought to increase his power and territory and greatly expanded his empire. As a result, much of the original Roman empire fell under his rule. He was responsible for the creation of schools and the spread of Christianity throughout Europe.
It seems that you missed the given choices of the question above; but anyway, here is the correct answer. The correct answer would be RHETORIC. When you are able to convince your principal to cancel an assembly because of a political concern, this situation is an example of a rhetoric. Rhetoric is defined as the art of persuasion by using effective written, spoken or visual language.