Christopher Columbus set sail on his first voyage from Palos de la Frontera, Spain.
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The American Dental Association was founded in Niagara Falls, New York.
Germany declared war on France and sent its first wave of troops to Belgium to start the attack.
Queen Elizabeth II opened the 11th Commonwealth Games held in Edmonton, Canada.
The Anglican Church of America approved a gay bishop.
American coming-of-age teen comedy film 'The Princess Diaries' was released.
