They smuggled slaves into the country and took part in an active domestic slave trade
Opportunity cost is the value of the next best alternative forgone as a result of making a decision.
"a. Immigration restrictions were expanded as fears of communist <span>infiltration from Soviet bloc nations spread" would be the best option from the list, since McCarthy instilled a feeling of paranoia about communism in the US.</span>
The U.S. Constitution is based on several principles of American democracy. Yes, it is reflected because the amendments list the powers given to the individual people.
I would call this the 'Red Scare' as a phobia against communism or radical politics after WWI probably because the Soviet Union came out of WWI but on the contrary there were a lot of sympathizers to the cause of the Soviet Union and interest in their new experiment of actually trying to implement socialism at least among the Canadian and American working classes and many union members.