The electric typewriter went on sale for the first time in Syracuse, New York, USA.
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Mark Zuckerberg founded the social networking website Facebook.
The US Military shot down a Chinese high-altitude surveillance balloon.
Bill Gates had a pie thrown in his face while visiting EU officials in Brussels, Belgium.
Adolf Hitler appointed himself as the head of the Armed Forces High Command.
Dr. John J. Livingood reported the first synthetic production of a natural form of radium.
