| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
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| 1 | Encyclopedia Editorial Office | -- | 721 | 2025-05-22 05:45:26 |
On May 24, 1844, Samuel Finley Breese Morse (1791–1872), an American inventor and artist, transmitted the first long-distance electrical telegraph message between Washington, D.C., and Baltimore, Maryland, inaugurating a new era in electrical communication. The message, “What hath God wrought?”, was received by Alfred Vail, Morse’s collaborator, and marked the first public demonstration of the potential of the electromagnetic telegraph system.