Well, the type writer and the telephone would be the first things that come to mind.
The incandescent light bulb is another one. - I think this would only qualify as an revolution to the communications of America if you factored in it being used as a light signal on boats, and even that is arguable. While it is a major invention, I don't see it as a communication revolution.
The telegraph and telephone.
in the late 1700 early 1800s the engishmen were slowly taking the Indians land, so they eventually allotted them area in the dry barren plains in south central America. the didn't move there ALL of the Indians were forced to live on a spit of land sharing lethal diseases and living off of little hunting and unfertile land.
In the late 80's computers were used in companies to keep files, track of records and to type letters.
The gauge of a write it's determined by the application. The three main factors are length, voltage and current. The American Wire Gauge (AWG) is a standardized system that has been in use since the late 1800's. There are tables that can be used to determine the gauge if you know the application. The gauges that are used for wire are not the same for the steel industry as they use several other standards.
Thomas Edison
It was made out of natural pebbles in around the late 5th century in the greek world.
telegraph
In the late 1800s they did not have the sewage systems and waste disposal that we have today.
In the late 1800s they did not have the sewage systems and waste disposal that we have today.
New production techniques that increased efficiency.
Standard Oil Company
true
Land rights
they exported surger
Andrew Carnegie
Radio communications was first introduced in the late 1800s with the telegram service. Several antques from that era sell well at www.ebay.com and also, www.amazon.com for more information.
american and french
industrialist and immigrants.