The two primary rivers the Sumerians used were the Tigris and the Euphrates, for trading and agricultural purposes.
the Sumerians had no bodies of water to protect them from outside in vaders.
Because it was too salty.
Songdo Tidal Flat
They established canals and ditches.
With other Sumerians
a river is a body of water that flows
Lake
Assaroe Lake, Co. Donegal, Ireland, is a large body of water that flows into the River Erne, which then flows past Belleek Pottery.
flows through Brazil into the Atlantic Oceam
A stream.
river
The Black Sea.
Atlantic Ocean.
The Dniester River flows into the Black Sea
stream
A River.
the gulf of mexico