Correct answer choices are:
1. Schools
2. Prisons
4. Military bases
A prior restraint is an official government restriction that prohibits speech or different expression before it will occur. It prevents the govt. from suppressing data embarrassing to the govt. or perhaps simply essential of the govt (or different entities).
He used this to keep the communists away because they were weaker than us and could not afford to be attacked; we could.
They were fed mulberry leaves
By sailing the straight across the Atlantic ocean