The correct answer to this open question is the following.
Although there is no map attached to this question, we can say that the long-term benefits of the WPA and other agencies beyond the creation of jobs during the Depression were the following.
As soon as new President Franklin D. Roosevelt arrived at the White House, he created the "New Deal," a series of programs aimed to help the poor American people who were living economic difficulties due to the Great Depression.
The Works Progress Administration created in 1935 and existed for 8 years to help 8 million American citizens to get jobs that helped to sort out the difficult consequences of the Great Depression. The function of this office transcended in that is helped to also create opportunities to support the American arts and its artists in what was known Federal Project Number One. The project helped many artists to create entertainment forms to inspire and entertain Americans under those difficult years.