sorry--I oversimplified: the cuneiform tablets about containing
epidemics that I described were found in Mari, a trading outpost of
Sumer's Mesopotamian kingdom. Sumer proper is in what is now Iraq,
but Mari is in modern Syria.
There never was such a thing as "Sumer's Mesopotamian kingdom"; each of the
city-states was entirely independent and had its own king. Accordingly it is
impossible that Mari belonged to such a kingdom.