Question

order the topics from broadest to narrowest. broader historic infrastructure projects of president roosevelts new deal bridge - building projects conducted by the public works administration historic infrastructure projects of the 20th century infrastructure projects conducted by the public works administration narrower submit

Explanation:

1. The broadest topic covers all 20th-century historic infrastructure projects, with no narrower focus on a specific program or project type.
2. Next is the subset of those projects tied to Roosevelt's New Deal, narrowing to a specific U.S. government initiative within the 20th century.
3. Then, we focus further on just the infrastructure projects run by the Public Works Administration, a specific New Deal agency.
4. The narrowest topic is only the bridge-building projects done by that same agency, limiting the scope to one type of infrastructure project.

Answer:

1. historic infrastructure projects of the 20th century
2. historic infrastructure projects of President Roosevelt's New Deal
3. infrastructure projects conducted by the Public Works Administration
4. bridge-building projects conducted by the Public Works Administration