<p>"The year 1905 saw Russia submerged in a wave of mass political and&nbsp;social unrest, including terrorism, worker strikes, peasant unrest, and&nbsp;military mutinies. This led to the establishment of limited&nbsp;constitutional monarchy, the State Duma of the Russian Empire, the&nbsp;multi-party system, and the Russian Constitution of 1906.</p> <p>The Russian Revolution is the collective term for a series of&nbsp;revolutions in Russia in 1917, which destroyed the Tsarist autocracy and&nbsp;led to the creation of the Soviet Union. The Tsar was deposed and&nbsp;replaced by a provisional government in the first revolution of February&nbsp;1917, which was focused on Petrograd. The February Revolution took&nbsp;place in the context of heavy military setbacks during the First World&nbsp;War, which left much of the army in a state of mutiny.</p> <p>The Soviets, which were led by more radical socialist factions,&nbsp;initially permitted the Provisional Government to rule, but insisted on a&nbsp;prerogative to influence the government and control various militias&rsquo;&nbsp;leading to the second revolution, during October, in which the&nbsp;Provisional Government was removed and replaced with a Bolshevik&nbsp;government.</p>