ANSWER: the map can be a primary or secondary source. If a map was produced as immediate evidence of an area, then it is a primary source. If the map is just a symbolic depiction of a space then it is a secondary source.
American and domestic foreign policy during World War 2 were linked in that once America entered the war it had a significant impact on its economy. ... It was Hitler who declared war on the USA. Prior to that American domestic politics were dominated by the arguments between interventionism and isolationism.
I believe both originated and evolved in the United States during the late 1940s and early 1950s