<em>Option A) The best description for the shift in political power that took place following the Russian Revolution of 1917 is a shift from an Autocratic system to a Communist one.</em>
Explanation:
The Russian Revolution began on March of 1917 and marked the collapse of the Russian Empire on the hands of the Bolshevists, led by Vladimir Lenin, who would later become the founder of The Communist Party of The Soviet Union. The political system of Russia went from an authoritarian one, in which all the power is concentrated in the hands of one leader, to a communist one in which the revolution puts the working in class in power and establishes social ownership of the means of production.
