Date of the Decree "On Strengthening the Principles of Religious Tolerance": January 25, 1905 December 12, 1904 April 17, 1905 October 17, 1905

The correct answer is: April 17, 1905.<br /><br />The Decree "On Strengthening the Principles of Religious Tolerance" was issued by Tsar Nicholas II of Russia on April 17, 1905. This decree aimed to promote religious tolerance and protect the rights of all religious minorities in the Russian Empire.