Isaac Briggs & William Longstreet was awarded a patent for the first steamboat in the US.
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MP's in the UK voted in favor of triggering the European Union Bill (Article 50), which gave the government the power to prepare to leave the European Union.
The first scientific hand-held calculators (HP-35) hit the markets with a hefty price tag at $395.
The first volume of the Oxford English Dictionary was published.
Voice of America, the US' official external radio and television service, began broadcasting.
An atomic bomb explosion was aired on TV for the first time.
