On this day: October 31

Published On: Oct 31 2012 12:59:09 AM EDT   Updated On: Oct 31 2014 02:00:00 AM EDT

The first All Hallows' Evening is celebrated, Nevada becomes a state, Harry Houdini dies, Mount Rushmore is completed, and the Vatican apologizes to Galileo, all on this day.

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National Archives and Records Administration

1940: The Battle of Britain during World War II ends, with the United Kingdom preventing a possible German invasion. The battle, which began in July 1940, was the first major campaign to be fought entirely by air forces, and was also the largest and most sustained aerial bombing campaign to that date.