Iraq has no natural boundaries, thus the Sumerians were vulnerable to attacks from Akkad, the Elamites and the Amorites, as well as the Guti.
Some of the reasons for the decline of Sumer include the reduction of agricultural production. There was a population decline during this time, weakening the power of the Sumerians.
The answer is that they just pooped
Find out what the reasons were and decided what were not the reasons.
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Poachers hunting this endangered species has made the number of their population decline.
The decline Bad emperors Inflation with economy Mercenarie army Too big
just because i said.......................
The answer is that they just pooped
black death (plague) and crusades
it had too manny cheattas
They knew how to do it so they didn't come back until their ruler was a better leader