22 févr. 1844 - 1844 Samuel Morse invents the telegraph.
Description:
Samuel Morse invents the telegraph, which allows messages to be sent quickly over a wire. By 1860, telegraph wires stretch from the east coast of the United States west of the Mississippi River.Ajouté au bande de temps:
Date:
22 févr. 1844
Maintenaint
~ Il y a 180 ans
