Across
- 3. Sumerians solved their uncontrolled water supply problem by creating _______ systems.
- 4. To maintain irrigation systems across village borders, villages had to _______ together.
- 5. There was a ______ of food in the foothills.
- 6. The canals and ditches became clogged with ______.
Down
- 1. The people in the foothills had to move to the ______ because there were too many people (over population)
- 2. Finally, city-states fought each other in order to ______ the water supply.
- 4. The first problem that Mesopotamians had to solve after moving to the plains was how to control the ______ supply.