How did living in company town make union membership more difficult for workders

The town based union membership is quite difficult for working-class people because if the company stores couldn't sell goods to the workers who joined the union, they won't be able to benefit. Because these stores cannot benefit the union and its members and vice versa, this makes union membership in towns hard.

Explanation:

the lines on a surface map are called isobars. isobars are lines of constant pressure which are measured in units called millibars. the numbers indicate the amount of air pressure, in millibars, that each line represents.