The two primary rivers the Sumerians used were the Tigris and the Euphrates, for trading and agricultural purposes.
Sumer is located between the Tigris and Euphates rivers.
Tigris
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
A large body of water that flows through land might be called a river. Another name for a large body of water that flows through land would be a canal.
river
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
runoff water eventually flows to a water body :)
river
Atlantic Ocean.
The Black Sea.
The Dniester River flows into the Black Sea
stream