Amtrak began operating as the United States’ passenger railroad company.
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Geoffrey Hinton, the 'Godfather of AI,' resigned from Google amidst growing concerns over AI.
Crown Prince Naruhito became the Emperor of Japan following his father's abdication.
The All-China Federation of Trade Unions was founded.
Pluto was officially named.
A national strike began in the United States, calling for an eight-hour workday instead of 12 hours.
