Respuesta :
According to Americans living in the cities, labor strikes was a sign of a communist revolution in the United States.
Option B
Explanation:
The 1900s represent the rise of the communist revolution in the United States. It also involved the use of socialism as well as communism. Most of the communist revolution was inspired by the ideas of Karl Marx and the Marxists who aimed at bringing communism in place of capitalism.
People who followed marxism believed that all the people of the working class must unite and free themselves from the Capitalist oppression. Option B is correct because the labor strikes were the initial stages of the communist revolution as they were the working class of the society and wanted to be free from the capitalist rule.