What is this? explain it to everyone who needs to know about it

During the late 19th century, russia's settlement and development of siberia was made possible by the invention of the

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.

Miniver cheevy's foolishness is clearly on display in the fifth quatrain. how so?