Question

what contributed to the advancement of sumerian society? choose four. open libraries to bring vast knowledge to all. a system of laws to abide by and a government to enforce them. one empowered ruler to unite their city - states. a division of labor that allowed people to specialize in trades. the first system of writing, which enabled record - keeping and communication. advanced weaponry to conquer other lands

Explanation:

The Sumerians developed the first system of writing (cuneiform) for record - keeping and communication. A division of labor allowed Sumerians to specialize in different trades, boosting economic and social development. A system of laws and a government to enforce them provided order. While there were rulers in Sumerian city - states, they were not always "empowered" in the sense of absolute power. Also, Sumerians did not have advanced weaponry for large - scale conquest in the way later empires did. Open libraries as described in the option did not exist in Sumerian society.

Answer:

A system of laws to abide by and a government to enforce them
A division of labor that allowed people to specialize in trades
The first system of writing, which enabled record - keeping and communication