Christopher Columbus discovered Puerto Rico on his second voyage.
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The Great Flood of St Petersburg killed 10,000 people and affected almost half a million more.
The University of Warsaw, Poland, was founded as a Royal University following the Partitions of Poland.
The British poet Alfred Lord Tennyson became Britain's Poet Laureate.
A meteorite weighing 8kg landed southwest of Odessa, Ukraine.
Pelé, the legendary Brazilian soccer star, scored his 1,000th goal.
