Selena Gomez achieved a world record for being the first person to reach 100 million followers on Instagram.
Source
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.