Belize became a member of the United Nations.
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Sequoia National Park was established in the Sierra Nevada region of California, USA, by the National park service.
The first printing press was set up in New England, US.
David Attenborough gained one million followers on Instagram within 4 hours and 45 minutes of his first post.
Selena Gomez achieved a world record for being the first person to reach 100 million followers on Instagram.
China finished building the world's largest radio telescope at 1,640 feet (500 meters) long.
