Civilization includes all aspects of culture ,such as technology. so the importance of civilization is that it is living beyond just the hunter-gatherer stage , where they lived to survive , eat and reproduce. civilization is living beyond survival 
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Civilization is to be a good citizen and understanding your responsibilities as a citizen and being civilized. Being disciplined, for ex- a civilized man doesn't throws garbage in open. Keeping control over your words because they don't come back and saying limited ords is a sign of being civilized. If the people of a society are civilized then no riots will take place and no one ill have to lose their life because of riots. And also the society will touch great heights. 
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thnk you chauhanroh... i m glad to help you
thank you keep helping
ohhk nyc to talk to u...
if you need any help in history i am always there.
ohhk .. ofcorse..