| A | B |
| Rio Grande | river between US and Mexico |
| Territory | land owned by a nation |
| Acquire | to get or obtain land |
| Annexation | to add on land |
| Cession | to give up land |
| Treaty | agreement between nations |
| 49’ latitude line | agreed on border for Oregon |
| 54’40’ latitude line | border Polk wanted for Oregon |
| South Pass | low flat lands in Rocky Mt to the Oregon Trail |
| Gadsden purchase | low flat land used for railroad lines |
| Louisiana territory | bought from France |
| Florida | threaten Spain into a treaty |
| Texas | it was an independent Republic before annexation |
| Mexican Cession | land won w after Mexican American War |
| Oregon | treaty with British |
| Alamo | mission in Texas where Americans lost |
| Manifest Destiny | belief that it was Gods plan for the US to expand |
| Justify | to defend your actions |
| Santa Anna | the Mexican general |
| Diplomatic | peaceful negotiations |