Moving east from California, you have the great basin desert, followed by the Rocky Mountains, and then the relatively dry great plains.
Population follows precipitation.
https://gisgeography.com/us-precipitation-map/
https://www.thoughtco.com/geography-shapes-us-regional-weath...
Moving east from California, you have the great basin desert, followed by the Rocky Mountains, and then the relatively dry great plains.
Population follows precipitation.
https://gisgeography.com/us-precipitation-map/
https://www.thoughtco.com/geography-shapes-us-regional-weath...