Interstate Highways.
The car
the turnpike was the invention that made the growth of railroads possible
The invention of the Cotton Gin, which made large scale growth of cotton possible. Cotton needed farm workers to plant, cultivate and harvest it.
Tremendous population growth in the Ancient Americas was made possible by corn production.
Barbed Wire.
The growth in the use of railroads was made possible because of cattle shipments. The Industrial Revolution was also a major factor in building more railroads.
an increase in imported materials
The post-World War II economic prosperity, known as the "baby boom," led to an increase in demand for housing. This, coupled with advancements in transportation infrastructure (such as highways) and the availability of affordable mortgages, made suburban living possible and attractive to many families in the 1950s.
Improvements in engineering methods. Answer this question…
Improvements in iron and steel production
Improvements in engineering methods. Answer this question…