PLZZ HURRY 50 POINTS Why did urban areas develop subway, elevated train, and streetcar systems?
to make it possible to transport raw materials and finished goods
to provide transportation for rural workers who lived in cities
to make it possible for people to move around within cities
to provide transportation for urban workers who lived on farms

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.