Answer:
See below
Step-by-step explanation:
5. lusitania change to Lusitania. We refer to ship names as proper nouns
6. great --> Great; countries use proper nouns. It is Great Britain
7. atlantic --> Atlantic; names of oceans are proper nouns
8. Submarine -> submarine; this is a common noun and should not be capitalized
9. War --> war; war is common noun; should not be capitalized
10. germany -> Germany; country has proper noun and has to be capitalized