Across
- 2. more of something than is needed
- 3. an arrangement in which workers specialize in a particular job
- 5. a river that flowed into Mesopotamia
- 6. organized society within a specific area
- 7. human-made waterways
Down
- 1. large arc of rich farmland that extends from Persian Gulf to Mediterranean Sea
- 2. mixture of rich soil and tiny rocks left behind by rivers
- 4. a way of supplying water to an area of land