They advanced their civilization by advancing in mathematics and cuneiform
Older than the inhabitants of Mesopotamia, and the first to form an advanced civilization that included the oldest systems... The traces of the civilization they built still bear witness to the extent of the progress and civilization of the Sumerians
when did Sumerian civilization end
The Sumerians
Yes.
Sumerians did not have any advance over the economy relative to their place and time. They were there to do their mission.
The Sumerians had a highly developed language.
the sumerians or ancient egypt
Neighboring Sumerians and the Akkadians were bilingual.
Neighboring Sumerians and the Akkadians were bilingual.
sumerians
The Sumerians
about 300 years