British explorer Henry Hudson discovered Delaware Bay.
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Half a million people in South East England were left without electricity.
The Slave Abolition Act was passed and came into effect the following year on August 1.
Saturn's moon, Enceladus, was discovered by William Herschel.
Matt Vogel became the new voice for Kermit the Frog.
The Battle of Wofla between the Turkish and Portuguese occurred.
