Henry Clay in the context of "Andrew Jackson"

The Whig Party was a mid-19th century political party in the United States. Alongside the Democratic Party, it was one of two major parties from the late 1830s until the early 1850s and part of the Second Party System. As well as four Whig presidents (William Henry Harrison, John Tyler, Zachary Taylor, and Millard Fillmore), other prominent members included Henry Clay, Daniel Webster, Rufus Choate, William Seward, John J. Crittenden, and John Quincy Adams (whose presidency ended prior to the formation of the Whig Party). The Whig base of support was amongst entrepreneurs, professionals, Protestant Christians (particularly Evangelicals), the urban middle class, and nativists.

The party was hostile towards the ideology of "manifest destiny", territorial expansion into Texas and the Southwest, and the Mexican–American War. It disliked presidential power, as exhibited by Andrew Jackson and James K. Polk, and preferred congressional dominance in lawmaking. Members advocated modernization, meritocracy, the rule of law, protections against majority rule, and vigilance against executive tyranny. They favored an economic program known as the American System, which called for a protective tariff, federal subsidies for the construction of infrastructure, and support for a national bank. The party was active in both the Northern and Southern United States and did not take a firm stance on slavery, but Northern Whigs tended to be less supportive than their Democratic counterparts.

Presidential elections were held in the United States from November 1 to December 4, 1844. Democratic nominee James K. Polk narrowly defeated Whig Henry Clay in a close contest turning on the controversial issues of slavery and the annexation of the Republic of Texas. This is the only election in which both major party nominees served as Speaker of the House at one point, and the first in which neither candidate held elective office at the time.

President John Tyler's pursuit of Texas annexation divided both major parties. Annexation would geographically expand American slavery. It also risked war with Mexico while the United States engaged in sensitive possession and boundary negotiations with Great Britain, which controlled Canada, over Oregon. Texas annexation thus posed both domestic and foreign policy risks. Both major parties had wings in the North and the South, but the possibility of the expansion of slavery threatened a sectional split in each party. Expelled by the Whig Party after vetoing key Whig legislation and lacking a firm political base, Tyler hoped to use the annexation of Texas to win the presidency as an independent or at least to have decisive, pro-Texas influence over the election.

James Knox Polk (/poʊk/; November 2, 1795 – June 15, 1849) was the 11th president of the United States, serving from 1845 to 1849. A protégé of Andrew Jackson and a member of the Democratic Party, he was an advocate of Jacksonian democracy and American expansionism. Polk saw Texas join the Union in his first year in office, one of the precipitating causes that soon led the U.S. into the Mexican–American War. The settlement of that war expanded American territory to the Pacific Ocean. During his term, the dispute over the Oregon Territory with the United Kingdom was also resolved, creating the present U.S.-Canadian boundary.

After building a successful law practice in Tennessee, Polk was elected to its state legislature in 1823 and then to the United States House of Representatives in 1825, becoming a strong supporter of Jackson. Following his tenure as chairman of the Ways and Means Committee, he became Speaker of the House in 1835, the only person to serve both as Speaker and U.S. president. Polk left Congress to run for governor of Tennessee, winning in 1839 but losing in 1841 and 1843. He was a dark-horse candidate in the 1844 presidential election as the Democratic Party nominee. Polk entered his party's convention as a potential nominee for vice president but emerged as a compromise to head the ticket when no presidential candidate could gain the necessary two-thirds majority. In the general election, he narrowly defeated Henry Clay of the Whig Party and pledged to serve only one term.

Presidential elections were held in the United States on November 7, 1848. Held in the aftermath of the Mexican–American War, General Zachary Taylor of the Whig Party defeated Senator Lewis Cass of the Democratic Party.

Despite Taylor's unclear political affiliations and beliefs, and the Whig opposition to the Mexican–American War, the 1848 Whig National Convention nominated the popular general over party stalwarts such as Henry Clay and Daniel Webster. For vice president, the Whigs nominated Millard Fillmore, a New York Whig known for his moderate views on slavery. Incumbent President James K. Polk, a Democrat, honored his promise not to seek re-election, leaving his party's nomination open. The 1848 Democratic National Convention nominated Senator Lewis Cass of Michigan after former President Martin Van Buren withdrew his bid for a second term over a platform dispute. Van Buren broke from his party to lead the ticket of the Free Soil Party, which opposed the extension of slavery into the territories.

The Compromise of 1850 was a package of five separate bills passed by the United States Congress in September 1850 that temporarily defused tensions between slave and free states during the years leading up to the American Civil War. Designed by Whig senator Henry Clay and Democratic senator Stephen A. Douglas, with the support of President Millard Fillmore, the compromise centered on how to handle slavery in recently acquired territories from the Mexican–American War (1846–48).

The provisions of the compromise included a provision that approved California's request to enter the Union as a free state, and strengthened fugitive slave laws with the Fugitive Slave Act of 1850. The compromise also banned the slave trade in Washington, D.C. (while still allowing slavery itself there), defined northern and western borders for Texas while establishing a territorial government for the Territory of New Mexico, with no restrictions on whether any future state from this territory would be a free or slave state and established a territorial government for the Territory of Utah also with no restrictions on if the territory would become a slave or free state.

Edward Thurlow Weed (November 15, 1797 – November 22, 1882) was an American printer, newspaper publisher, and Whig and Republican politician. He was the principal political advisor to prominent New York politician William H. Seward and was instrumental in the presidential nominations of William Henry Harrison (1840), Zachary Taylor (1848), and John C. Frémont (1856).

Born in Cairo, New York, Weed apprenticed as a printer under William Williams and served with him in the War of 1812 before winning election to the New York State Assembly. He met Seward in the assembly, and they formed a close political alliance that lasted for several decades. Weed and Seward became leaders of the New York Anti-Masonic Party, and Weed established the Albany Evening Journal as the party's main newspaper. Weed supported the American System of Henry Clay and helped establish the Whig Party in the 1830s. He helped Seward win election as Governor of New York and supported the successful presidential candidacies of Harrison and Taylor.

The Good Neighbor policy (Spanish: Política de buena vecindad; Portuguese: Política da Boa Vizinhança) was the foreign policy of the administration of United States President Franklin D. Roosevelt towards Latin America. The policy's main principle was that of non-intervention and non-interference in the domestic affairs of Latin America. It also reinforced the idea that the United States would be a "good neighbor" and engage in reciprocal exchanges with Latin American countries. Overall, the Roosevelt administration expected that this new policy would create new economic opportunities in the form of reciprocal trade agreements and reassert the influence of the United States in Latin America; however, many Latin American governments were not convinced.

Although the policy was implemented by the Roosevelt administration, President Woodrow Wilson had previously used the term, but subsequently went on to justify U.S. involvement in the Mexican Revolution and occupation of Haiti. Senator Henry Clay had coined the term Good Neighbor in the previous century. President Herbert Hoover turned against interventionism and developed policies that Roosevelt perfected.

Jacksonian democracy, also known as Jacksonianism, was a 19th-century political ideology in the United States that restructured a number of federal institutions. Originating with the seventh U.S. president, Andrew Jackson and his supporters, it became the nation's dominant political worldview for a generation. The term itself was in active use by the 1830s.

This era, called the Jacksonian Era or Second Party System by historians and political scientists, lasted roughly from Jackson's 1828 presidential election until the practice of slavery became the dominant issue with the passage of the Kansas–Nebraska Act in 1854 and the political repercussions of the American Civil War dramatically reshaped American politics. It emerged when the long-dominant Democratic-Republican Party became factionalized around the 1824 presidential election. Jackson's supporters began to form the modern Democratic Party. His political rivals John Quincy Adams and Henry Clay created the National Republican Party, which would afterward combine with other anti-Jackson political groups to form the Whig Party.

The Second Party System was the political party system operating in the United States from about 1828 to early 1854, after the First Party System ended. The system was characterized by rapidly rising levels of voter interest, beginning in 1828, as demonstrated by Election Day turnouts, rallies, partisan newspapers, and high degrees of personal loyalty to parties.

Two major parties dominated the political landscape: the Democratic Party, led by Andrew Jackson, and the Whig Party, assembled by Henry Clay from the National Republicans and from other opponents of Jackson. Minor parties included the Anti-Masonic Party, an important innovator from 1827 to 1834; the abolitionist Liberty Party in 1840; and the anti-slavery expansion Free Soil Party in 1848 and 1852. The Second Party System reflected and shaped the political, social, economic and cultural currents of the Jacksonian Era, until succeeded by the Third Party System.

John Tyler (March 29, 1790 – January 18, 1862) was the tenth president of the United States, serving from 1841 to 1845, after briefly holding office as the tenth vice president in 1841. He was elected vice president on the 1840 Whig ticket with President William Henry Harrison, succeeding to the presidency following Harrison's death 31 days after assuming office. Tyler was a stalwart supporter and advocate of states' rights, including regarding slavery, and he adopted nationalistic policies as president only when they did not infringe on the states' powers. His unexpected rise to the presidency posed a threat to the presidential ambitions of Henry Clay and other Whig politicians and left Tyler estranged from both of the nation's major political parties at the time.

Tyler was born into a prominent slaveholding Virginia family. He became a national figure at a time of political upheaval. In the 1820s, the Democratic-Republican Party, at the time the nation's only political party, split into several factions. Initially a Jacksonian Democrat, Tyler opposed President Andrew Jackson during the nullification crisis as he saw Jackson's actions as infringing on states' rights and criticized Jackson's expansion of executive power during Jackson's veto on banks. This led Tyler to ally with the southern faction of the Whig Party. He served as a Virginia state legislator and governor, U.S. representative, and U.S. senator. Tyler was a regional Whig vice-presidential nominee in the 1836 presidential election, which Democrat Martin Van Buren won. He was the sole nominee on the 1840 Whig presidential ticket as William Henry Harrison's running mate. Under the campaign slogan "Tippecanoe and Tyler Too", the Harrison–Tyler ticket defeated Van Buren.