Achievements obtained in field of education during 2007to2017 BS​

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now

What was the atlanta race riot of 1906 ?

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.