The Civil Marriage Act was introduced, making same-sex marriage legal in Canada.
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Thomas Edison completed the world's first movie studio in West Orange, New Jersey.
The first reusable spacecraft called ''Space Shuttle Columbia" broke apart when returning to Earth, and all seven astronauts on board died.
Mary Queen of Scots received the death sentence from cousin Queen Elizabeth I.
The first scientific hand-held calculators (HP-35) hit the markets with a hefty price tag at $395.
Isaac Briggs & William Longstreet was awarded a patent for the first steamboat in the US.
