Charli D’Amelio became the first person to reach 100 million followers on TikTok.
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Blizzard released World of Warcraft for PC and Mac, changing the MMORPG scene forever.
The fourth and final attempt to launch the Soviet Union's N1 rocket failed.
The New York Times published Edwin Hubble's discovery that the Andromeda 'nebula' is actually a galaxy.
Lake Merced, California, was found to have sunk 30 feet (9 meters).
Frederick County, Maryland, US, refused to pay the British Stamp Tax.
