Which emperor marked the end of the Romanov dynasty in Russia?

Nicholas II

Nicholas II, the last Emperor of Russia, is often remembered for his reign which led to the end of the Romanov dynasty and the emergence of the Soviet Union. His inability to manage political, economic, and military crises greatly contributed to the Russian Revolution of 1917. Nicholas II and his family were executed by the Bolsheviks, marking a radical turning point in Russian history. His reign is also marked by the tragedy of the Russo-Japanese War and World War I, which exacerbated public discontent and set the stage for revolution.