easy easy

5. people who resisted the expansion of america
7. the movement of people or animals to one place or another
13. the act of becoming larger
14. the name of an act which put laws in place that allowed people to claim free land
15. a substance dropped by birds to enhance crop growth speed
16. a popular and common crop
17. a vehicle guided by rails

1. an fuel used to power trains
2. the act of making people work for someone
3. a path that guides a train
4. people who work at a mine
6. livestock
8. a territory that is found to have valuable material, and have a rapid increase in population
9. large land mammals found in
10. a device used in railroads to communicate quickly
11. a vehicle pulled by livestock
12. a rare, shiny, and durable mineral