<span>stokely carmichael , hope this helped!</span>
C and d have to do with the upper classes and how they (mostly) utilized labor. Populists were more concerned with how to make things work for them (a bit cynical on my part).
The progressives (particularly women and labor leaders) were very concerned about working conditions and how to improve them.
B<<<< answer
It would have forced him to seek Congress's approval for US involvement.
Regiment, in most armies, a body of troops headed by a colonel and organized for tactical control into companies, battalions, or squadrons.