5672106 Tsar of Russia, during world war one by Unknown photographer, (20th century); (add.info.: Nicholas II or Nikolai II (1868-17 July 1918), Tsar of Russia, during world war one. 1915. known as Saint Nicholas in the Russian Orthodox Church, was the last Emperor of Russia, ruling from 1 November 1894 until his forced abdication on 15 March 1917. His reign saw the fall of the Russian Empire from one of the foremost great powers of the world to economic and military collapse.); Universal History Archive/UIG.