The late nineteenth-early twentieth century saw?

the rise of the middle class
the rise and dominance of the republican party
the need for a third political party
woodrow wilson switch from the republican party to the new democrats

Which of the following describes an effect of world war ll on the united states economy a. automobile companies produced a record number of cars b. many factories had to expand to produce military equipment c. the airplane industry suffered as the allies began using airplanes in combat d.cities with shipyards declined because so many ships had been sent overseas.