1. The Mexican-American War

3. Manifest Destiny
The belief that Americans had the God-given right to expand westward.

4. Politically…
Election of 1840: William Henry Harrison
John Tyler

5. Maine
Boundary issues
Settled with Webster-Ashburton Treaty

7. Texas Won independence from Mexico in 1836 Wanted to be annexed by US
US worried about upsetting Mexico, also large piece of slave territory

8. Annexation
Tyler, 1845

9. Election of 1844

10. James K. Polk Dark horse candidate “Young Hickory”
“Who is James K. Polk?”
Expansionist and believed in Manifest Destiny

11. Oregon Country
54⁰40’ or fight!

12. Problems with Mexico Polk wanted to buy CA Mexico mad about TX
Boundary disputes in TX