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Telecommunications
DiscoveriesIntroducing the world’s-first telecommunication device from 2,500 years ago
The hydraulic telegraph, credited as the world’s first telecommunications device, traces its roots back to ancient Greece.
Joshua Shavit![](https://www.thebrighterside.news/uploads/2024/07/95ac29_ec3ecba3c43d44208d17470a3002e363mv2.webp?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
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