What of the following revolutionized the steel industry?

A. the Bessemer Process
B. the switchboard
C. the mail-order catalog
D. the Bell Company*******

3 answers

Go to www.google.com and look up these terms:

Bessemer Process

switchboard

mail-order catalog

Bell Company

steel industry revolutionized


Let us know what you learn about each.
Sure miss Ma Bell. Bell labs was cool, but steel?
Ur awesome! Thanks!