Across
- 3. - helps people’s bodies fight off disease
- 6. - machine that sends and receives signals through a thin wire
- 9. - the scientific knowledge about how things work
- 11. line - each worker does only one part of a job
- 12. - people who move from one country to settle in a different country
- 13. rush - thousands of people came from around the world to search for gold
- 14. - pass thoughts or information to others
- 15. - an area of land that includes a house and its buildings
- 16. - something that is made for the first time
- 17. train - group of covered wagons that travels together for safety
Down
- 1. - someone who works hard to make a change happen
- 2. - gives the person the right to be the only one making or selling an invention
- 4. rights - when people have the same rights
- 5. - waterway that is dug by people
- 7. - keeping people out of a place
- 8. - money that is paid for using a road
- 9. - across the continent
- 10. - region that forms the edge of a settled area