How did elevated trains and subways improve urban transportation? a). by using horses and carriages to commute b). by making the automobile unnecessary c). by transporting commuters without crowding city streets d). by delivering fresh food to people in cities

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explanation:

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.