I think this is the correct answer, but let me know if it is incorrect. People were having more children per family.
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.
Im pretty sure it’s the United Kingdom
They could elect Consuls but not Tributes. Hope this helps you!