Water
These were constructed along the river to block water so that it could be stored.
What are dams?
Mesopotamia is located in this region.
What is the Fertile Crescent.
by 5000 B.C.E., farmers in the Zagros foothills did not have enough land to grow food because of this.
What is increasing population?
Sumerian cities fought over this.
What is water?
Canals became clogged with this stuff which is fine particles of rock.
What is silt?
Sumerians dug these to help shape the paths of the flowing water
What are canals?
These were the two major rivers flowing between Mesopotamian.
What are "Tigris River" and "Euphrates River"?
These mountains in northern Mesopotamia has good conditions for growing crops.
What is Zagros?
These were built out of mud bricks to prevent enemies from getting in.
what are walls?
Since these were connected for miles around by canals, farmers could no longer live apart, or in small groups.
What are villages?
This was a problem for farmers because it washed away the seeds that they were trying to plant.
What is flooding?
This is the plains region where the Sumerians lived.
What is Sumer?
Mild weather and plentiful rains made the foothills a good place for this job.
What is farming?
The Sumerians dug these outside city walls to prevent enemies from getting in.
What are Moats?
As the Sumerians worked together to maintain the irrigation system, they began to create larger these.
What are communities?
Sumerian farmers created these "system" to help control the water supply.
This part of Mesopotamia was hilly and received rain.
The northern part.
People moved out of the foothills and onto here because they needed to grow food.
What is plains?
Historians call the walled cities of Sumer this.
What are city states?
Some towns in Sumer became these with populations as large as several thousand people.
What are cities?
These were built along the sides of the rivers to help prevent flooding, and holes were poked in them to let water through when the land was dry.
What are levees?
This was difficult to find on the plains.
Building materials?
The nearby wooded hills provided this for building shelters.
What is timber?
These strong disagreement over water became so intense that they often led to bloodshed.
What is dispute?
Between 3500 and 3000 B.C.E., villages grew into these.
What are towns?