United States Communication: Invention of telephone. (17 feb 1876 anni – 4 agos 1876 anni)
Descrizione:
Alexander Graham Bell invented the telephone at the nation's centennial exposition in Philidelphia in 1876. By 1915, the telephone wires connected Americans from coast to coast.Aggiunto al nastro di tempo:
Data:
17 feb 1876 anni
4 agos 1876 anni
~ 5 months and 19 days