The answer to this question is the letter "D" which is "More Americans were now able to move to the Suburbs". The suburbs are the residential part of the district and it is outlying. This is the best result of the creation of the interstate highway system focused and budgeted by the government to improve the means of transporting and moving in different part or areas of the region.
c the city had developed a social and political hierachy
Sorry I do not know ur question
