結果 : what was the telegraph invention used for
1:31

Invention of the Telegraph

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1:58

The Telegraph: The Civil War Text Machine

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How the Telegraph Changed Communication

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Telegraph Tales: Tracing the Evolution of Long-Distance Communication

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20:17

How did people talk before cell phones? | History Remade with Sabrina

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The Tragedy That Led Samuel Morse to Develop the Telegraph

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What happened to America’s Telegraph lines? How the Telegraph Transformed America - IT'S HISTORY

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2:59

Telegraphs and Telephones - How They Work

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The journey of human communication

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3:29

How Does Morse Code Work?

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The Telegraph Explained On 3 Minutes (ENG)

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The Invention of the Telegraph

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Today in History - Jan 6 - First Public Demonstration of the Telegraph (1838)

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0:41

The Invention of the Telegraph

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How the telegraph changed the world!

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0:37

What was the telegraph first used for?

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2:46

The Week in History Ep. 22 - The Telegraph Age

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1:59

Why Was The Telegraph Still Used Even After The Invention Of The Telephone?

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Wired: A World Transformed by the Telegraph

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356 回視聴 - 8 年前