| A | B |
| Tariff of 1842 | set the tariff rate at 32 percent; signed reluctanly by Tyler although he hated the Tariff |
| John Tyler | VP to Harrison; hostile to Whig policies; ejected from the Whig party |
| His Accidency | John Tyler |
| Third War with England | War of words with Britain largely settled by the Webster-Ashburton Treaty |
| Aroostook War | dispute over the border between Maine and British Canada; settled in 1842 |
| Lord Ashburton | British financier and negotiator who settled border disputes in 1842 |
| Daniel Webster | only member of Tyler's cabinet who did not resign; negotiated border settlements with England in 1842 |
| Caroline incident | nearly led to war between Britain and the US; British forces burned the steamship Caroline in US territory |
| Caroline | ship ferrying supplies to republican rebels in Canada |
| Lone Star Republic | Texas |
| Annexation of Texas | pushed by John Tyler and accepted to reduce the possibility of British alliance with an independent Texas |
| 49th parallel | border established for most of the Canadian-US border by the Convention of 1818 |
| 54 40 | northern boundary of jointly occupied Oregon |
| Oregon fever | one reason the British accepted the division of Oregon at the 49th parallel |
| Henry Clay | Whig candidate in 1844 |
| James K. Polk | democratic candidate in 1844 |
| Liberty Party | New York third party that took votes from Polk, ensuring his defeat |
| Young Hickory | James K. Polk |
| Walker Tariff | lowered the Tariff; one of Polk's campaign promises |
| independent treasury | favored by Polk; first introduced by Van Buren |
| John L. O'Sullivan | person who coined the term Manifest Destiny |
| acquisition of California | part of Polk's platform of expansion |
| Oregon | acquired up to 49th parallel: another of Polk's promises |
| John Slidell | sent by Polk to offer $25 million for California |
| Slidell Mission | insult to Mexico; offer to buy California rejected |
| Neuces River | border of Texas, according to Mexico |
| Rio Grande | southern border claimed by Texas in 1836 |
| Zachary Taylor | Old Rough and Ready; invaded Mexico from the north |
| Buena Vista | victory of Zachary Taylor over Mexican forces in 1847 |
| Stephen W. Kearney | conquered New Mexico and linked up with Fremont in California |
| John C. Fremont | reached California and proclaimed the Bear Republic |
| Winfield Scott | Old Fuss and Feathers; landed at Veracruz and marched north to conquer Mexico City |
| Treaty of Guadalupe Hidalgo | 1848 Treaty by which Mexico was paid $15 million dollars to give up half its territory to the United States |
| Conscience Whigs | opposed the Mexican War on the grounds that it was immoral and would lead to an expansion of slavery |
| spot resolution | Lincoln's resolution that called on Polk to show where on American soil that American blood had been spilled. |
| Wilmot Proviso | proposed amendment to many bills which would have banned slavery from territory taken from Mexico |
| West Point | founded in 1802; trained officers for the Mexican War and the Civil War |
| Naval Academy | established at Annapolis, Maryland in 1845 |
| Marine Corps | won new praise and added the Halls of Montezuma to its list of victories |
| Chapultapec | place where the ninos heroes committed suicide rather than surrender to the Americans |
| Nicholas P. Trist | annoying diplomat who negotiated the Treaty of Guadalupe Hidalgo |