transcontinental telegraph

E82988

The transcontinental telegraph was the first coast-to-coast telegraph system in the United States, enabling near-instant communication across the country and rendering long-distance mail services like the Pony Express obsolete.


Statements (49)
Predicate Object
instanceOf communication infrastructure
telegraph system
authorizedBy United States Congress
builtBy Overland Telegraph Company of California
Pacific Telegraph Company
Western Union Telegraph Company
communicationLatency near-instant compared to mail
communicationType long-distance telegraphy
completionDate October 24, 1861
connects East Coast of the United States
West Coast of the United States
connectsCities Omaha, Nebraska
Sacramento, California
constructionStartDate 1861
continent North America
country United States
effect accelerated communication between the U.S. coasts
integrated western territories more closely with the eastern United States
reduced reliance on long-distance mail services
rendered the Pony Express obsolete
endPoint Sacramento, California
era American Civil War era
followedBy transcontinental telephone service
historicalSignificance first coast-to-coast telegraph system in the United States
major milestone in U.S. communications history
impactOnBusiness enabled rapid financial and commercial transactions across the U.S.
infrastructureElement copper wire
telegraph poles
legalBasis Pacific Telegraph Act of 1860
lineRoute Missouri River to the Pacific Coast
across the Great Plains
through the Rocky Mountains
through the Sierra Nevada
medium overland telegraph line
operatedBy Western Union Telegraph Company
powerSource telegraph batteries
precededBy regional telegraph networks in the eastern United States
purpose enable near-instant communication across the United States
facilitate commercial communication
support government and military communications
relatedTo American Civil War communications
Pacific Telegraph Act of 1860
Pony Express
Western Union
replacedService Pony Express
signalType Morse code
startPoint Omaha, Nebraska
status historical
technology electric telegraphy

Referenced by (1)
Subject (surface form when different) Predicate
Pony Express
replacedBy

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