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The one word answers are Aidan Quinn!!
(The most important is Food though)

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I say stable food supply because you can't live without food. Also you need food for sheep and cows or whatever animals you have.

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I think that a stable food supply is the most important. First off there are many people that need to be fed and they all need food. Having extra food is good to make sure everybody had food and some left over. When they didn't have tons of food they had to hunt and sometimes they didn't have enough food for everyone. Then, with out food you die.

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Food because without food there is no people and without people no civilization

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I choose stable food supply because all of your people will die without food. Also with dead people you have nothing.

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PEOPLE GOTTA EAT!!!!!!!

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I think the most important would be staple food supply because if people didn't have enough food then people would eventually die and there couldn't be a civilization because there would be no people.

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I think you need a stable food supply because you cant live without food. You also cant feed the animals, and without food people would die.

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i think its a system of government because without a leader, no one will be in control and everything will be w a c k.

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A stable food supply is the most important of the characteristics. I think this because you do not want your people to starve. If your people starve than you will have no civilization, or have a very poor civilization.

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we need food because food is an organism's source of energy to survive.

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the most important characteristic of Civilization is a stable food supply because if there is no food everyone would die and then there would be no Civilization

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I think stable food supply because without food you would die. Secondly without a food surplus you wouldn't be able to do other jobs/trades because food is the top priority.

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i believe that having a government is most important, because of laws, and rulers, because with no government everyone would be in anarchy and do stupid stuff

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I say stable food supply because if you don't have enough food your people will die and when everyone dies you don't have people to lead so i think stable food supply

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Food because if you don't have food the people would starve to death. If they starved to death they would not be a civilization.

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I think the most important characteristic is a stable food supply because everyone needs to have enough food to survive.

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I believe that this is the most important because if you don't have any food that you cant live. Another reason is that if they don't have food than they have to move and if they don't stay put than they have no civilization.

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Food because you need food to live and with larger mass you would have more people to feed.

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In my opinion its culture. I say this because all cultures are different if not alike. A culture defines a civilization and it's specifically unique to THAT culture. Like Ur, they are polytheism meaning they believe in more then one god. The Ur civilization, also had a temple, and a king, and they traded a lot.

So,  without culture the civilization wont be unique, different, they wont be defined.

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I would say stable food supply because with out food it will be very hard to survive. Also you need food to feed your animals. Also you need food because if there is no food then no people and then no people equals no civilization.