What were the effects of the end of wwi on the us economy?

What is the main idea of this excerpt? 1.1.3

The transcontinental railroad runs from the to the i. north ii. south iii. east iv. west a. i and ii b. ii and iii. c. iii and iv d. ii and iv

Which organization created jobs for blacks, whites, and native americans, improving parks, roads, and buildings? civil rights movement women’s movement environmental protection agency civilian conservation corps