US President James K. Polk asked Congress to declare war on Mexico.
The US Congress approved the declaration of war on May 13.
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In Montreal, Canada, a fire broke out after an English merchant put fireplace ashes in his attic for soap-making – not knowing that the cinders were still hot.
Justin Bieber made his first tweet at 8:27 pm, promoting his single 'One Time.'
Monty Python was formed.
Natalie Cole released her debut album titled 'Inseparable,' which went on to win two Grammys.
Henri Desgrange made the world's first world record for a bicycle, reaching a speed of 21.95 miles per hour.
