Answer:
Political, Economic, and Social Effects
Explanation:
C) The Soviet Union was not a participant at the Washington Conference of 1921. This was a military conference, with nine countries attending which were: the United States,Japan, China, Great Britain, Belgium, France, Netherlands and Portugal. The conference was in regards to interests in the Pacific Ocean and East Asia.
This period was known as the reign of terror
After the french revolution, Robespierre started killing anyone who was perceived as a political opponent, even if they weren't political opponents in reality. There were police spies everywhere who would tell on people and people would get a fake trial in which they would be found guilty and would be executed.
The answer is a military force
