The hoop stress is the force exerted circumferentially (perpendicular to the axis and the radius of the object) in both directions on every particle in the cylinder wall.
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
C- nelson Mandela; the rest of the answers for the pretest are:1)b 2)ac 3)c 4)a 5)a 6)c 7)b 8)a 9)bde 10)d 11)d 12)a 13)d 14)d 15)a 16)c 17)bc 18)c 19)d 20)c hope this helps!
