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Smoke signals are those used for communication between vast areas

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it is trained to return to its loft from long distances carrying some kind of message or letter

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Messages were carried on horseback across prairies, plains, deserts, and mountains. and algo used to express somje thing in a card or papel

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mechanical or light signal device used to regulate the movement of railways. also wehn you go with your car to the market and some people use this to help you to park your car

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Developed in the 1830s and 1840s by Samuel Morse and other inventors

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The first telephone patent was granted to Alexander Graham Bell in 1876.

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The word itself originates from the Latin 'radius', meaning 'ray' or 'beam'.

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It was 1971 when Ray Tomlinson invented and developed electronic mail

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The history of the development of the iPhone by Apple Inc. spans from the early 2000s to about 2010