The answer should be B! It's actually kinda funny. Northerners thought that the Confederate army would be easily defeated and that the Civil War was going to begin and end at the Battle of Bull Run. So, lots of spectators watched, but they were quickly proven wrong, as the war lasted for years.
Capitalism is an economic and political system in which a country's trade and industry are controlled by private owners for profit, rather than by the state. An example is businesses being able to participate in free trade.
The appropriate response is yes. The enhanced relations between the Soviet Union and China; upgraded Nixon's reality picture; opened up political and monetary relations with the Chinese.
I hope it helps.