Across
- 3. a complete change in ways of thinking, working or living
- 4. a complex society with cities, well-organized government, and specialized workers
- 7. the system that a community uses to produce and distribute goods and services
- 8. fertile areas where many civilizations developed (2 words)
- 11. a supply of something that can be used as needed
Down
- 1. to change the growth of plants or behavior of animals in ways that are useful to humans
- 2. groups of people that occupy different ranks or levels in society (2 words)
- 5. new stone age (2 words)
- 6. when people spend most of their time working at a single job
- 9. the world's first city
- 10. a set of shared beliefs about supernatural powers that created and rule the world