Is there supposed to be a picture??
The correct answer is <em><u>option A.</u></em> Porter is writing <em><u>social history</u></em> because he is focusing on lives of large numbers of ordinary people. He is examining letters, journal entries, autobiographies and newspapers from that time to see how the fear of the disease affected the lives of ordinary people. Porter is trying to recollect data from that time and put together a piece that describes how society was affected by the influenza pandemic, which was a consequence of World War I, an historic event that shaped and changed many societies, specially the ones from Europe.
The answer is "arms race".
An arms race, in its unique use, refers to a competition between at least two states to have the best military. The developing threat of the nuclear-arms race has neglected to rouse much verbal confrontation. Atomic arrangement is never again broadly examined in the media; the general population has been enlightened small regarding a subject of existential significance; and inquiries once energetically contended have been to a great extent overlooked.