The Dutch expedition captained by Admiral Van Warwyck first sighted Mauritius.
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39 out of 50 delegates signed the US Constitution and shared it publicly.
German-British astronomer William Herschel discovered the moon of Saturn, 'Mimas.'
During the Senate climate crisis task force, climate change activity Greta Thunberg said, 'You're not trying hard enough. Sorry.'
The fourth great fire of San Francisco happened, destroying a considerable portion of the city.
Conjoined twins were successfully separated for the first time.