What key industries were barely profitable during the 1920s

The venn diagram below shows some services provided by state and local governments. the answer choices are (1) - creating a police force, (2) - regulating taxicabs, (3) - regulating savings banks, (4) - issuing driver licenses.

What did nativists think about chinatowns in the late 1800s?

3. according to oliver, how can the fast food industry with the food revolution? i will give brainliest