Answer:
Bronze age
Step-by-step explanation:
Sumer General location on a modern map, and main cities of Sumer with ancient coastline. The coastline was nearly reaching Ur in ancient times.
Geographical range: Mesopotamia, Near East, Middle East
Period: Late Neolithic, Middle Bronze Age
No, the Sumerian civilization did not exist during the Paleolithic Period
So Sumer Civilization exist during bronze age