Which of the following was a tactic that companies used to hurt unions

Hiring Scabs

- Scabs was the name for union members who refuse to go out on strike or workers who are hired by businesses to replace striking workers.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

i think the answer is the one about environmental and social health.

hope this