[osreb]

During the October 1917 Russian Revolution, the liberal, western-oriented Provisional Government headed by Alexander Kerensky, which was established following the February 1917 Russian Revolution that overthrew Tsar Nicholas II, was removed and replaced by the first Soviet government headed by Vladimir Lenin. The October Revolution began in Petrograd (now St. Petersburg), then the capital of Russia, and quickly spread to the rest of the country. One of the seminal events of the twentieth century in terms of its worldwide historical impact, the October Revolution is also one of the most controversial and hotly debated historical events in modern times.