Mercurius became Pope John II, making him the first pope to change their name after attaining popehood.
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The World Health Organization (WHO) announced that gaming addiction is a Mental Health Disorder.
A patent was awarded to Willis Carrier, which gave us the world’s first Air Conditioner.
The mapping of Mars' surface began.
The Alemanni crossed the frozen Rhine in large numbers and invaded the Roman Empire.
The Duquesne Spy Ring, a Nazi German espionage network, was sentenced to prison.