Selena Gomez achieved a world record for being the first person to reach 100 million followers on Instagram.
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Sequoia National Park was established in the Sierra Nevada region of California, USA, by the National park service.
David Attenborough gained one million followers on Instagram within 4 hours and 45 minutes of his first post.
NASA launched the Mars Observer, a space probe designed to study Mars' geology and climate.
Henry Ford changed employees' working schedules to 8-hour days, 5 days a week.
The first printing press was set up in New England, US.
