Selena Gomez achieved a world record for being the first person to reach 100 million followers on Instagram.
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China finished building the world's largest radio telescope at 1,640 feet (500 meters) long.
Schools shut down in Singapore due to air pollution from farming practices in Indonesia.
Belize became a member of the United Nations.
The first printing press was set up in New England, US.
Henry Ford changed employees' working schedules to 8-hour days, 5 days a week.
