1. Gold Rush
2. More farming
3. Increase of land farther west
4. Manifest Destiny
5. Spreading American culture
6. Avoiding wars with other countries
7. To become a dominant country with power
8. To increase population with social powers
9. To kick out Mexico (who owned California) and Britain (who owned Oregon) from the U.S.
10. To build more towns, farms, villages, factories, etc.
11. The Great Depression/more jobs
12. A new start to life