Only the last two have shown any impact whatsoever (or even existence), and
radio was invented in the US by Tesla prior to Marconi's work (his more powerful
receivers detected and verified Marconi's original signals.) You might claim
that since he was an immigrant that doesn't count, but by that time he had been
living in the US for many years, had worked for Edison (then competed against
him with the founding of Westinghouse, backed by JP Morgan and Westinghouse),
and developed radio as a method of teleoperation of remote devices.
> "zeb haradon" <firstname.lastname@example.org> wrote:
> > Make a list of the 5 technical innovations which you feel most vastly
> > improve your life. Now next to each one, write where they were invented.
> Steam engine, railroad, smallpox vaccine, printing press, radio.
> -xx- Damien X-)
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