Four communication improvements included:
the telegraph
the telephone
assembly line
mail delivery
trans-Atlantic cable
Four communication improvements included:
the telegraph, telephone, mail delivery, and trans-Atlantic cable.
the telephone
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Asked 4/18/2012 8:08:19 AM
Updated 3/14/2016 5:29:15 AM
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Edited by
Janet17 [3/14/2016 5:29:10 AM], Confirmed by
Janet17 [3/14/2016 5:29:15 AM]
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