Answer:
One of the great contributions the Sumerians made to civilization was their many inventions. They invented the first form of writing, a number system, the first wheeled vehicles, sun-dried bricks, and irrigation for farming. All of these things were important for the development of human civilization.
They had a lo of minerals
I don't exactly get what you are saying, so I'm practically guessing. If you restate I will gladly help you.
Answer:
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Explanation: