Answer:
The U.S. State that includes the coordinates 20 N and 158W is Alaska.
Step-by-step explanation:
Alaska is the northernmost and westernmost state in the United States and has the most easterly longitude in the United States because the Aleutian Islands extend into the Eastern Hemisphere. The name Alaska was introduced in the Russian colonial period when it was used to refer to the Alaska Peninsula. It was derived from an Aleut-language idiom, which refers to the mainland.