HELP ME How did glasnost contribute to the break-up of the Soviet Union?

A. Restructuring the economy led to a change in the political structure.
B. By allowing citizens more freedom to travel, people could see what they were missing.
C. Due to cuts in military spending, people were not afraid the army would stop their demonstrations.
D. By allowing citizens to speak openly, people could express their frustrations.

D: By allowing citizens to speak openly, people could express their frustrations.

Explanation:

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.