Military leaders revolted, hoping to establish as fascist government i know this is late but here to help anyone else needing it
I believe it was a trial upon Ethel and Julius Rosenberg. The couple were accused of selling nuclear secrets to the Russians, but treason could not be held since the U.S was not at war with the Soviet Union.
The answer is D. Ceremonial ties and monarchical rule.
I hope this helps!
Have a nice day!
~Maddie