Final answer:
Nevada is the state home to the Sierra Nevada, Toiyabe, Monitor, and Schell Creek Mountains. These ranges contribute to Nevada's dramatic landscapes and are part of the Mountain West region's diverse topography.
Step-by-step explanation:
The state that has the Sierra Nevada Mountains, Toiyabe Mountains, Monitor Mountains, and Schell Creek Mountains is Nevada. The Sierra Nevada Range, in particular, is a notable mountain range that extends 400 miles across the middle of California and into Nevada, featuring remarkable landscapes like the iconic Half Dome in Yosemite. These mountain ranges are part of the geologic story of the region, having been formed by processes such as convergence, subduction, and extensional stress, which also contributes to the dramatic topography seen today. The Mountain West region, which includes these mountain ranges, has undergone significant economic and population growth, transforming from the historic Wild West into a modern area of development.