The invention of steel, they were able to produce steel cheaper and faster. This paved the way for the building of skyscrapers, which today we can see everywhere. The development of this lead to the development of suburban areas in the United States during the 1950s.
I dont know what the" peices of evidence' part means but I do know that the amount of people that went hungry because of the war is the fact that most of the food went to the milaitry and the community was limited
