Sequoia National Park was established in the Sierra Nevada region of California, USA, by the National park service.
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NASA launched the Mars Observer, a space probe designed to study Mars' geology and climate.
The Mozambican War of Independence against Portugal began.
China finished building the world's largest radio telescope at 1,640 feet (500 meters) long.
David Attenborough gained one million followers on Instagram within 4 hours and 45 minutes of his first post.
Henry Ford changed employees' working schedules to 8-hour days, 5 days a week.
