Consider a mining town. Once upon a time there was a mine, and the mine was the largest employer in the town. They mined copper ore and sold it on the global market. This brought money into the town, which sprouted a restaurant, real estate broker, doctor’s office, and church.
https://geohot.github.io/blog/jekyll/update/2020/08/07/on-money-creation.html
https://geohot.github.io/blog/jekyll/update/2020/08/07/on-money-creation.html