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Home Q & A Board Humanities History
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l.k.2222 l.k.2222
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6 years ago
At the end of the Civil War, what communications system did the railroads use to coordinate their complex flow of rail cars?
 
  A) The telephone
  B) The Pony Express
  C) The magnetic telegraph
  D) The internet
  E) Text-messaging
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antrantr
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6 years ago
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l.k.2222 Author
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6 years ago
Thanks
jmelchor77
wrote...

Yesterday
Good timing, thanks!
IvanaVR
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2 hours ago
Thanks
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