Elon Musk bought a 9.2% stake in Twitter, amounting to $2.9 billion.
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NASA's Challenger Space Shuttle was launched from Florida on its maiden voyage.
The Declaration of Breda document was issued by the exiled King Charles II of England.
Moscow was mentioned for the very first time in historical records when two princes met there for a great banquet.
Jack Ma founded Alibaba Group Holding Limited.
US Congress released a US flag that featured 20 stars and 13 red and white stripes.
