38. which of these sparked the rise of service sector jobs in the united states? a) the entrance of the united states in to world war ii b) the consumerism of prosperous post-world war ii america c) the automation of many tasks previously done by workers d) the need for jobs for demobilized soldiers following world war ii 39. the truman administration used the provisions of the smith act of 1940 to a) desegregate the military and federal government. b) prosecute the leaders of the american communist party. c) increase funding for space exploration and nasa programs. d) justify the use of military force to stop the spread of communism.