Golden Triangle of Meat-packing
The Golden Triangle of Meat-packing or Golden Triangle of Beef refers to the influence of meat-packing in three southwestern Kansas counties and their principal cities: Dodge City, Garden City, and Liberal. While population decreased in many counties in western Kansas during the 20th century, these three cities and their environs experienced population increases from 1980 to 2020.
Source: Wikipedia — Golden Triangle of Meat-packing (CC BY-SA 4.0)