The chart shows the population of three major Washington cities. What was the main cause of the change in population from 1880 to 1910?

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.