| A | B |
|---|
| Nullification Crisis | under Jackson, S. Carolina threatened secession over states' rights to cancel federal acts |
| Missouri Compromise 1820 | agreement that Maine would be admitted as a free state and ? would be admitted as a slave state |
| Indian Removal Act 1830 | under Jackson, Native Americans would be paid to relocate west of the Miss. River |
| Monroe Doctrine 1823 | US proclamation that the Americas were closed to new European colonies |
| Manifest Destiny | the belief that the US should occupy the lands from the Atlantic to the Pacific |
| Adams-Onis Treaty 1819 | Spain gave up claims to Florida and Oregon; US gave up TX claims |
| Treaty of Guadalupe-Hidalgo 1848 | ended the Mexican American War and set TX border at Rio Grande |
| Mexican Cession | part of the Treaty of Guadalupe-Hildago in which the US bought CA and NM territories for $15M |
| Gadsden Purchase 1853 | the US bought narrow strip of land in NM and AZ from Mexico for $10M |
