Bessemer develops a
process to refine
iron into steel at
a low cost
American
steel mills
adopt the
Bessemer
process
?
Which statement best completes the diagram?
A. The coal industry mechanizes and provides cheap fuel for new
industries
O B. Electricity lights homes and businesses and expands working
hours
C. Railroads benefit from cheaper line production and expand rapidly.
D. Better refined oil powers engines in new modes of transportation