Crown Prince Naruhito became the Emperor of Japan following his father’s abdication.
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The Acts of Union were passed, officially uniting England and Scotland as one country.
Fidel Castro banned elections and declared Cuba to be a socialist nation.
Same-sex marriage was legalized in Sweden.
Geoffrey Hinton, the 'Godfather of AI,' resigned from Google amidst growing concerns over AI.
Despite running out of oxygen, Jim Whittaker became the first American to reach the summit of Mount Everest.