Answer:
Westward expansion had a negative impact in the United States. Manifest Destiny played a role in motivating settlers to move west. Other motivations for moving west were gold, land, and opportunity. This also hurt Natives because it killed them and took their land.
C, the 1960's is the correct answer :^)
hope this helps! have a good day/night!
In times of war free speech may or can be more limited than in times of peace is correct apex.