Democratic Senator Robert F. Kennedy started his presidential campaign.
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Mississippi formally ratified the Thirteenth Amendment and became the last state to approve the abolition of slavery.
The first African American newspaper called 'Freedom's Journal' was published in the US.
The world record for rainfall dumped 6.1 feet (1.87m) of rain on Cilaos, Island of Réunion.
King Gustav III of Sweden was shot during a masquerade ball at the Royal Opera Hall in Stockholm.
British bomber planes obliterated 89% of Würzburg, Germany, within just 20 minutes.
