Across
- 3. the raising of crops and animals
- 5. A long period of time
- 7. to move to a new place
- 9. The first part of the Stone age, when people first used stone tools
- 10. An object used to help a person accomplish something
- 12. This era marked the beginning of agriculture
- 13. The training of plants and animals to make them more useful to humans
Down
- 1. To do one thing well
- 2. An extra supply of something
- 4. people who move from place to place to meet their basic needs
- 6. the time before there was writing
- 8. The use of skills and tools to meet practical human needs
- 11. Human existence in cities, with systems of religion, education, government and specialization