6h 57min, oct 19, 4 y - 15 March 1917: Tsar Nicholas II abdicates and also removes his son from the succession. A Provisional Government is formed to replace the tsarist government.
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February 1880 - Failed attempt to assassinate Tsar Alexander II by blowing up his palace dining room kills 11 and wounds 56. The Tsar survives through being late to dinner.
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