Answer:
At its height in 1919–1920, concerns over the effects of radical political agitation in American society and the alleged spread of communism and anarchism in the American labor movement fueled a general sense of concern
Explanation:
I would think that it is C but I'm not that sure so get more answers.
Child laborers and Miners did not get to share the prosperity. child laborers were more times than not, sold to the shop or industry because, their families needed money. and the Miners didn't reap the money of the late 1800's because most of them were in dire need for money and would take any wage, or they had just gotten here from a foreign country and didn't have anywhere else to work.
"The reason why Britain didn’t declare war on the Soviet Union is an
intriguing one. Unknown to the general public there was a ‘secret
protocol’ to the 1939 Anglo-Polish treaty that specifically limited the
British obligation to protect Poland to ‘aggression’ from Germany" http://www.historyextra.com/qa/why-did-britain-and-france-not-declare-war-soviet-union-when-red-army...