Finland officially joined NATO, becoming the 31st member of the security alliance.
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The Declaration of Breda document was issued by the exiled King Charles II of England.
Elon Musk bought a 9.2% stake in Twitter, amounting to $2.9 billion.
US Congress released a US flag that featured 20 stars and 13 red and white stripes.
The 21st Commonwealth Games officially began on the Gold Coast, Queensland, Australia.
Bill Gates and Paul Allen founded Microsoft.
