Answer:
I would need the passage or article to answer those questions!
"between the two countries"
A prepositional phrase needs to contain a preposition, in this case it would be "between". As well it needs to modify the sentence and it should mention the object of the sentence. So "between the two countries" is correct.
1) h
2) c
3) a
4) d
5) b
6) g
7) e
8) f
