Chapter 7 of Wheelock's:
1) Sentence 9:
Post bellum multos libros de pace et remediis belli videbant.
After the war, we were seeing many books of peace and remedies for the war.
Why is "Post bellum" not written "Post bello" because it is an adverbial phrase telling time of action. Wheelock's treats it as an object.
2) Could someone explain the difference between "te" and "tu"?