What is a narrow valley found between steep rocky cliffs that was formed by a down cutting stream or river

Anarrow valley found between steep rocky cliffs that was formed as a result of cutting down by stream or river is called a canyon. this is because rivers have tendency to erode rock and continuous flow of river over years causes the creation of canyons. they often contribute to scenic views. 

Prompt: write about whether or not you plan to register to vote when you are 18 and what political party preference (if any) you will disclose. explain the reasons for your decisions.