Finland officially joined NATO, becoming the 31st member of the security alliance.
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Adolf Hitler formed the Schutzstaffel, the infamous paramilitary organization known to most as the SS.
Bill Gates and Paul Allen founded Microsoft.
The Declaration of Breda document was issued by the exiled King Charles II of England.
Martin Luther King Jr. was assassinated.
Moscow was mentioned for the very first time in historical records when two princes met there for a great banquet.
