Midland Empire
n.— «A true hub city and gateway to the West, Billings has become the commercial, health care, and cultural capital of the “Midland Empire,” a vast area of agricultural, mountainous, wilderness, and sometimes forbidding terrain that includes eastern Montana, the western Dakotas, and Northern Wyoming.» —“Billings: History” by City-Data.com May 12, 2006. (source: Double-Tongued Dictionary)