The first scientific hand-held calculators (HP-35) hit the markets with a hefty price tag at $395.
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The Civil Marriage Act was introduced, making same-sex marriage legal in Canada.
An atomic bomb explosion was aired on TV for the first time.
Joe Biden and his wife, Jill, founded the 'Biden Foundation.'
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 volume of the Oxford English Dictionary was published.
