Whenever olivia feels bad about an exam performance, she visits the professor and breaks down into tears. as the professor attempts to console her, she is psychologically returned to her childhood. sigmund freud would say that olivia is using to alleviate her anxieties about her academic abilities.

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.