The answer is: Unrest in the Russian military and civilian population
At that time, Tsar Nicholas II was known as Nicholas the Bloody or Vile Nicholas. He's not afraid to execute all citizens or other government officials who dare to undermine his rule.
His actions created Unrest in the Russian military and civilian population and people's approval toward him kept plummeting as the years go by, until eventually he was abdicated during the revolution in 1917.
The correct answer is absolutely c
Answer;
D. the United States suffering no war damage and having a strong economy
Explanation;
-The industrial revolution really caught the US up in the global scheme of things, but it was WWII that put the US (and the Soviet Union) in the forefront as leaders of the world.
-After the war,the US economy was really boosted, while Europe's was practically in shambles. Also, because the US helped Europe significantly in both world wars, it received kind of a morale/self-esteem boost of sorts. Moreover, because the country wasn't physically involved in the war, it didn't have to deal with repairing its land.