The answer would be the geography of the country. Its mountain terrain and bodies of water created a boundary to each city-state. Each city-state created their own society. For example, Sparta had created a military society while Athens is the center of many intelligent people. Each city-state also has their worshipped specific gods, Aside from Zeus, Poseidon, and Hades.
Answer: was to bring the war with Japan to a speedy end and spare American lives. It has been suggested that the second objective was to demonstrate the new weapon of mass destruction to the Soviet Union.