What is necessary for a society to be considered a civilization?

Who was the first Roman Emperor to make Christianity equal to all other religions? Are glyphs the same thing as hieroglyphics? Who is submarine Commander Mancuso? How did Great Britain find a way to gain power and china and shift the balance of trade? What was the importance of Alexandria? What year date did the us offially became a country? What did King Akhenaten contribute to Egypt? What happened after Roger Williams challenged the rules of the church in Plymouth ColonyAsk us anything? Who was the british leader in the battle of Yorktown? Where was the epicentre of the Kobe earthquake? What is the awa tribes shelter? How did disagreements over rule between the suarts and Parliament lead to the English civil war? Who is the first lady pilot? What country was ruled by Wilhelm 2? When and where was baseball player Johnny Ruffin born? How many chapels are in the capitol building? When did America became a country how many states were there? What was NOT true about the Korean War? What was one similarity between the roman empire and the ottoman empire? What hardships faced people on the home front?