What is the primary geographical feature in the western united states

the most geographically diverse, incorporating geographic regions such as the temperate rainforests of the Northwest, the highest mountain ranges (including the Rocky Mountains, and the Sierra Nevada), the western portions of the Great Plains, and all of the desert areas located in the United States

the above statement/question is (true);

the answer is solomon northrup. he was a free-born african american, abolitionist and professional violinist that was drugged, kidnapped and sold as slave in 1841 and remained in captivity until 1853 where he regained his freedom with the of the then-governor of new york, washington hunt. he wrote and published his memoirs "twelve years a slave" in 1853, and in this text, he tells the story of his escape thru one of louisiana's swamps (the great pacoudrie swamp) in which he ended up covered in green slime from crossing the surface of the dead water.