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Home Tag Semaphore line India

Tag: Semaphore line India

Optical telegraph tower! This was used before mobile, this is how messages were sent 200 years ago

Optical telegraph tower! This was used before mobile, this is how messages were sent 200 years ago

December 20, 2025

Last Updated:December 20, 2025, 19:01 ISTOptical Telegraph Tower: Even before mobile phones and modern technology, people used to contact each ...

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