The name “Euro” was officially adopted for European Currency.
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The Paris Agreement was opened for signatures.
The European Union's climate service declared that 2023 was the hottest year on record.
Bill Gates had a pie thrown in his face while visiting EU officials in Brussels, Belgium.
The United Kingdom left the European Union, also known as 'Brexit.'
The Maastricht Treaty came into effect, and with it, the European Union was formed.
