Answer:
This sentence contains both an interjection (Wow) and a conjunction (that's). No preposition, however (ex. over, against, about, with).
(Also, there should be a comma after wow lol)
Wiesel thought that Aushwitz was better that Birkenau. Hope this helps!
Answer:
I may be able to help but what is an umbrella topic
The compound subject is "Young Juan and his father." Both Jaun and his father are the subjects of the sentence, but because there are two of them it means there is a compound subject.