What vital means of communication connected baltimore to washington, d.c., in 1844?

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Question:

What vital means of communication connected baltimore to washington,
d.c., in 1844?

Answers

The telegraphSamuel Morse sent the first telegraph message from Washington DC to Baltimore in 1844.   The message he sent said, "What hath God wrought?"Within a decade, thousands of miles of telegraph cable lines were in use all over the United States, and then by the 1860s a transatlantic cable connected the USA to Europe for communication.

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