Times of war and conflict have often led to the government limiting expression.
True
False

True, especially the U.S. government which has limited free speech about wars and the government in both World Wars. Even arresting people for stating their opinions.

Explanation:

d. it adversely affected american productivity

the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.