The activities that most demonstrated Americans' belief in Manifest Destiny occurred during the 19th century, while thousands of settlers moved west and displaced thousands of natives.
Answer:
The protests of 1968 comprised a worldwide escalation of social conflicts, predominantly characterized by popular rebellions against military bureaucracies.
Explanation:
If you crossed it out, then the teacher must've told you not to do it. XD
Then again, I might be wrong.