An advantage is that it takes way less time to do it than to create a formal treaty since the President would not need consent from the congress for an executive agreement. A formal treaty can, however, last longer because it is more difficult to cancel, so if it's good, then it is also safer for it to be formal.
HUAC was created in 1938 to investigate alleged disloyalty and rebel activities on the part of private citizens, public employees and organizations suspected of having Communist ties. Citizens suspected of having ties to the communist party would be tried in a court of law.
B. The Red Scare
Your answer is a, and c. i hope this has helped, as i have had the same question earlier plus i have the same text book to, so i hope this has helped.
