Appalachian<span> highlands, and Rocky </span><span>Mountains</span>
Answer:
THE ANSWER IS D NO NEED TO EXPLAIN
I wanna say it is <span>Joseph Unahue, I'm not positive though.
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Negotiation between union leaders and business management is called : Collective bargaining
in collective bargaining, the union leaders and business management usually talked about the more acceptable condition for the workers that would benefit both parties
hope this helps