SAT US History Practice Question

The establishment of standard time zones occurred

1. A.at the time of the American Revolution to standardize measurements in the new nation.
2. B.in the 1880s to facilitate scheduling of railroad lines.
3. C.during World War I to coordinate the war effort better.
4. D.in the 1920s to allow for the coordination of nationally broadcast radio shows.
5. E.as part of the New Deal efforts at modernization.