The correct answer is:
Marxism.
Explanation:
A command economy, also known as planned economy is an economic system where the government controls the production, the government decides how, when and how much to produce, as well as the price of the products, the supply and demand laws doesn't interfere in this type of economy.
A command economy can be considered a base in Marxism, because in the "Common Manifesto" written by Karl Max, he states that the state should control the production, communication, transportation and that there should only be one national bank, owned by the state; and that is the basic principle of a command economy.
For Karl Marx, conflicts in a society are mostly caused by capitalist societies with different class status, where the proletariat class works a big amount of hours to produce products and services, and the upper class doesn't care about them.
<em>The Marxism theory states that this class conflict leads to a proletarian revolution, which then results in socialism, who will later transform in communism. </em>
The Catholic Church is the reason why he got power quickly.
Nicholas II or Nikolai II (Russian: Николай II Алекса́ндрович, tr. Nikolai II Aleksandrovich; 18 May [O.S. 6 May] 1868 – 17 July 1918), known as Saint Nicholas the Passion-Bearer in the Russian Orthodox Church, was the last Emperor of Russia, ruling from 1 November 1894 until his forced abdication on 15 March 1917.
WWI tanks were used to lead infantry advances across no mans land (option a ). It was a welcome development, as it was hoped it would help ending the long and casualties provoking trenches type of war.
So if the vice president (president of the Senate) isn’t present, the president pro tempore (senator who’s been there the longest from the majority party) will take over.