Across
- 5. a system that divides people into classes
- 7. a large arc of rich, or fertile farmland
- 9. the world's first system of writing
Down
- 1. a system that divides people into jobs
- 2. a mixture of soil and rocks that is very fertile
- 3. a way of controlling water for farming
- 4. a pyramid-shaped temple
- 5. producing more goods or crops than was needed
- 6. first set of 282 laws dealing with daily life
- 8. independent territories that make up a civilization