19. Which of the following is a constitutional result of the Civil War? Plz answer

A) The theory of states' rights and secession was
crushed
B) Blacks were now equal in every way to whites.
C) Native Americans were given equality,
D) The 8th amendment was applied to the states.

Quick using the information in the graph, one might speculate that a) w.w.i created increased job opportunities in the u.s. b) the election of president hoover in 1936 caused unemployment to decline. c) the return of soldiers following w.w.ii caused unemployment to increase in the u.s. d) the new deal programs of president roosevelt created employment opportunities in the u.s.