The Civil War was fought in 1861, so the answer would be D: 1800.
The whole sonnet is, in my opinion, about the fact that this woman does not love the poet - she is hiding her feelings well, and thinking about somebody else. So, the correct answer could be either C or D.
Answer:
8. deforestation
9. nearby
10. enjoyably
11. refresh
12. westward? not sure, sry
13. hurriedly
14. titled