On this day: October 31

Published On: Oct 31 2012 12:59:09 AM EDT   Updated On: Oct 31 2013 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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1517: On the eve of All Saint's Day, Martin Luther posts his 95 theses on the door of the Castle Church in Wittenberg, Germany, arguing that Christians were being falsely told that they could find absolution from sin through the purchase of "indulgences" from the Catholic Church. Luther's actions would spark the Protestant Reformation.