Adolf Hitler became Führer of Germany following the death of President Paul von Hindenburg.
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English clockmaker Daniel Quare gained the patents for a portable barometer to measure air pressure.
Andrew Hallidie introduced the cable car to San Francisco after witnessing a horse and carriage accident.
Musical.ly and TikTok merged, combining the users of both apps to form one community.
The King of England, William II, was killed by an arrow while hunting in New Forest Hampshire, England.
Samuel Briggs and his son patented his nail-making machine.