Explorer John Cabot claimed Canada for England, thinking he was in Asia when he was actually in Nova Scotia.
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An announcement was made to say that all cigarette packages in the US must display health warnings.
Siam changed its name to Thailand.
A mysterious outbreak of dancing plague or choreomania occurred in the German city of Aachen.
Pakistan International Airlines grounded 150 of its pilots after discovering their licenses were fake.
Due to her pure talent and popularity, Mary Pickford became the first female actress to be offered a $1 million contract.
