North Carolina repealed its controversial bathroom law that restricted transgender use.
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The Heinkel He 100 fighter set a world airspeed record of 463 mph (745 km/h).
The United States bought Alaska from the Russian Empire.
Swimmer Michael Phelps smashed the world record for the 200-meter butterfly swim at just 15 years old.
The US adopted the 15th Amendment, guaranteeing citizens the right to vote.
Someone tried to shoot President Ronald Reagan.
