Definition
The market is a meeting place between sellers and buyers of goods and services. The market could use a building on permanent or semi-permanent or without buildings.
Market by building permanent / semi-permanent is the market that use a cement or tile floors, metal or wooden poles, tin roof or tiles or shingles, whether walled or not.
The shortest distance is the calculated distance from the head office of the village / villages to the market by building permanent / semi-permanent and is expressed in miles.