inventions
Long before phones could call each other, someone invented a way to send electric signals using patterns of dots and dashes.
The telegraph is correct because it let people send messages using patterns of clicks — dots and dashes, known as Morse code — that traveled instantly along wires strung across long distances, long before telephones existed.
A bicycle and an umbrella are useful everyday inventions, but neither one sends messages or electric signals anywhere — they solve completely different problems, like getting around or staying dry.
Before the telegraph, sending a message across a country could take days or weeks by horse or ship — with the telegraph, that same message could arrive in minutes!
inventions
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