... was co-developed by the US Military, who needed a highly-resilient communications network, and US academics, who wanted a cheap one. Features including file transfer, remote access, email, group communications via Usenet, and the Web grew from this and similar (Cern/WWW) requirements.
The careful reader will note that I've not mentioned who lead in early adoption of the telephone, and truth is I don't know -- information isn't clearly available at least on brief search. Though ...
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