Short answers, pulled from the story.
The Russian Constitution of 1906 was a major revision of the 1832 Fundamental Laws that transformed Russia's absolutist government into one where the emperor shared power with a parliament for the first time. It contained an introduction and eleven chapters, comprising a total of 124 articles, and was enacted in 1906 just before the first State Duma opened.
The Russian Constitution of 1906 was enacted in 1906, immediately before the opening of the first State Duma. It followed the October Manifesto, which Tsar Nicholas II issued in 1905 during the Russian Revolution of 1905.
Nicholas II granted the constitution as a last-ditch effort to keep the empire from disintegrating during the Russian Revolution of 1905. He gave in after his chosen candidate to lead a military dictatorship, Grand Duke Nicholas, threatened to shoot himself unless the Tsar accepted reform proposals from his Minister of Finance, Sergei Witte.
Nicholas II chose the draft written by Peter Kharitonov, Deputy State Secretary of the State Chancellery, out of three proposed drafts. The drafters also studied constitutions from Austria-Hungary, Japan and Prussia, along with a rival draft published abroad by the Union of Liberation.
Under the Russian Constitution of 1906, the Tsar kept an absolute veto over all legislation and the sole right to propose changes to the constitution itself. He also retained sole command of the armed forces, the right to declare war and make peace, and the power to appoint and dismiss his ministers and dissolve the Duma at will.
The Russian Constitution of 1906 was formally abolished in 1917, after Tsar Nicholas abdicated in February of that year under the Old Style calendar. Alexander Kerensky, leader of the Provisional Government formed by the Fourth Duma, unilaterally abolished the Russian monarchy later that year, ending the constitution along with it.