How did the ability to write change the lives of people from ancient Sumer

In the explanation. :)

Explanation:

A few thousand years later, as variations on the two systems spread throughout the region, the entire ancient world had writing schemes that vastly improved the efficiency of economies, the accountability of governments and, maybe most importantly to us, our understanding of the past.

Reading and writing in ancient times wasn't for the masses, however. Daily life in Mesopotamia and Egypt was time-consuming, and so writing became a specialized profession, usually for members of the elite class. The highly-regarded scribes of ancient Mesopotamia were even depicted in art wearing cuneiform writing implements (a bit like a set of chopsticks) in their belts as a mark of their importance.

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