the answer is C, the OPEC oil embargo :)
The Russian Revolution 1917 which is also known as the October Revolution change government of Russia as it allowed the Bolshevik socialists to acquire power and eventually established the Soviet Union (USSR). This revolution is considered as one of the most important events in world history. The revolution helped to end the autocratic rule of Tsar and after that the Russian Soviet Federative Socialist Republic established.
The revolution not only helped in ending to monocratic, zarchic rule, autocratic, but also ended the economic and social power of the big landlords, feudalists, capitalists etc. Due to the result of this revolution, the first power of workers and peasants in the world established.
The middle ages primarily focused on religion, and not science, but the scientists which were present in the middle ages focused on astronomy a lot.
To bring charges against the president by the House of Representatives
