British driver Arthur MacDonald was the first to break 100 miles per hour in an automobile at Daytona Beach, Florida, US.
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Alvan Graham Clark discovered the white dwarf star Sirius B.
The United Kingdom left the European Union, also known as 'Brexit.'
A chimpanzee named Ham became the first primate to go to space aboard the US MR-2 spacecraft.
The day after being appointed, Adolf Hitler called for new elections to ensure he would win majority votes.
The Spanish government became bankrupt.