Air-Blowing
1850
faster process of iron smelting.
powered by fire and oxygen.
inexpensive steel.
telegraph
1830-1844
invented by samual morse.
transported messages.
telephone
1876
communication became faster.
invented by males.
different purposes got faster.
boath have patents. both invented by males.
communucation.
invented by males.
small.
invented by males. all made up of matter.