Help i need help with my Ap world history Quiz!!!!?

Question

Hi i have to do some quiz corrections on an ap quiz i took i finished the other questions except this one can you help me out and explain why that one is the right answer?

Question: The geography of Mesopotamia influenced Sumerian civilization in all of the following ways except

The region's isolation led Sumerians to see themselves as unique

that's the answer ^ but why? can you explain why?

Answer 1

well how would that influence by making them think they were unique i mean would a region make u think ur unique?