Name one thing each of the societies has in common for athen?

Sparta and Athens had similar forms of government; both city states were in part governed by elected assemblies. However, the top rulers of Athens were elected, while Sparta's were not. Athens was fundamentally a democracy; Sparta was an oligarchy.Both Sparta and Athens were militarily strong, though in different ways. Sparta's military strength rested in its army, composed of the best-trained and most powerful warriors of ancient times. In contrast, while the Athenian army was almost as large as the Spartan, the Athenian navy was far more advanced and dominated the Mediterranean Sea. Hope this helps a little ..

3. i would say one, but one is not prime nor composite.

The best sociological research method would have to be using experiments although it has some disadvantages as well