Answer: The Walls Protecting Athens. The walls protecting Athens during the Peloponnesian War. Initially Athens' strategy, as guided by Pericles, was to avoid open battle with the more numerous, and better trained Spartan hoplites, and to instead rely on Athens' superior fleet.
Explanation: Yes.
"2. Are you writing naturally and academically?" would be the best option. The rest of the answers seem more like revisions to grammatical errors rather than the voice of the essay.