Question: Question 4 ( Mandatory ) ( 1 point ) What did the telegraph do to send messages? Sent letters in envelopes Sent short pulses of

Question 4(Mandatory)(1 point)
What did the telegraph do to send messages?
Sent letters in envelopes
Sent short pulses of energy along a wire
Used carrier pigeons
Used a telephone
Question 4(Mandatory)(1 point) What did the telegraph do to send messages?

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