Answer:
Yes, the semi colon is fine. The one thing I would suggest changing, is where you said "much deeper", 'much' is not needed.
Explanation:
"It gives viewers a deeper insight as to just how important automobiles were during this specific time period; the ‘20s."
'Deeper' alone makes more sense than 'much deeper", it also sounds better than it did before. Hope this helps :)
Answer:
C maybe
Which of the following passages is the best example of the author's use of foreshadowing?
C. "This put him right back where he'd been in 1904....