8.Martin Van Buren

Martin Van Buren (December 5, 1782 – July 24, 1862) was the eighth President of the United States (1837–1841). Before his presidency, he was the eighth Vice President (1833–1837) and the tenth Secretary of State, under Andrew Jackson (1829–1831).
He was a key organizer of the Democratic Party, a dominant figure in the Second Party System, and the first president not of British descent—his family was Dutch. He was the first president to be born an American citizen,[2] his predecessors having been born British subjects before the American Revolution. He is also the only president not to have spoken English as his first language, having grown up speaking Dutch,[3] and the first president from New York.
As Andrew Jackson's Secretary of State and then Vice President, he was a key figure in building the organizational structure for Jacksonian democracy, particularly in New York State. As president, he did not want the United States to annex Texas, an act which John Tyler would achieve eight years after Van Buren's initial rejection. Between the bloodless Aroostook War and the Caroline Affair, relations with Britain and its colonies in Canada also proved to be strained.
His administration was largely characterized by the economic hardship of his time, the Panic of 1837. He was scapegoated for the depression and called "Martin Van Ruin" by his political opponents. Van Buren was voted out of office after four years, losing to Whig candidate William Henry Harrison.
In 1848 he ran unsuccessfully for president on a third-party ticket, the Free Soil Party.
by Wikipedia

10.John Tyler

John Tyler (March 29, 1790 – January 18, 1862) was the tenth President of the United States (1841–1845). A native of Virginia, Tyler served as a state legislator, governor, U.S. representative, and U.S. senator before being elected Vice President (1841). He was the first to succeed to the office of President following the death of a predecessor. Tyler's opposition to nationalism and emphatic support of states' rights endeared him to his fellow Virginians but alienated him from most of the political allies that brought him to power in Washington. His presidency was crippled by opposition from both parties, and at the end of his life, he would join the South in secession from the United States.
Tyler was born to an aristocratic Virginia family and he came to national prominence at a time of political upheaval. By the 1820s the nation's only political party, the Democratic-Republicans, began to split into factions, none of which shared Tyler's strict constructionist ideals. His opposition to Democratic leaders Andrew Jackson and Martin Van Buren led him to be elected Vice President on the Whig ticket. Upon the death of President William Henry Harrison on April 4, 1841, only a month after his inauguration, a short Constitutional crisis arose over the succession process. Tyler took the oath of office on April 6, 1841. He then moved into the White House and assumed full presidential powers, a precedent that would govern future successions and eventually be codified in the twenty-fifth amendment.
Once he became president he stood against his party's platform and vetoed several of their proposals. As a result, most of his cabinet resigned, and the Whigs, dubbing him His Accidency, expelled him from the party. While he faced a stalemate on domestic policy, he still made several foreign policy achievements, signing the Webster–Ashburton Treaty with Britain and the Treaty of Wanghia with China. Tyler dedicated his last two years in office to his landmark accomplishment, the 1845 annexation of the Republic of Texas. With little hope for re-election, he created a third party to move public opinion in favor of annexation, which led to the 1844 presidential election of expansionist Democrat James K. Polk over Tyler opponents Henry Clay and Van Buren.
Tyler essentially retired from electoral politics until the outbreak of the Civil War in 1861. He sided with the Confederate government, and won election to the Confederate House of Representatives shortly before his death. As a result of his opposition to the Union, his death was the only one in presidential history not to be officially mourned in Washington. Although some have praised Tyler's political resolve, his presidency is generally held in low esteem by historians; today he is considered an obscure president, with little presence in the American cultural memorya
by Wikipedia

11.James K. Polk

James Knox Polk ( /ˈpoʊk/ "poke"; November 2, 1795 – June 15, 1849) was the 11th President of the United States (1845–1849). Polk was born in Mecklenburg County, North Carolina.[1] He later lived in and represented Tennessee. A Democrat, Polk served as Speaker of the House (1835–1839) and Governor of Tennessee (1839–1841). Polk was the surprise ("dark horse") candidate for president in 1844, defeating Henry Clay of the rival Whig Party by promising to annex Texas. Polk was a leader of Jacksonian Democracy during the Second Party System.
Polk was the last strong pre–Civil War president, and he is the earliest of whom there are surviving photographs taken during a term in office. He is noted for his foreign policy successes. He threatened war with Britain over the issue of which nation owned the Oregon Country, then backed away and split the ownership of the region with Britain. When Mexico rejected American annexation of Texas, Polk led the nation to a sweeping victory in the Mexican-American War, which gave the United States most of its present Southwest. He secured passage of the Walker tariff of 1846, which had low rates that pleased his native South, and he established a treasury system that lasted until 1913.
Polk oversaw the opening of the U.S. Naval Academy and the Smithsonian Institution, the groundbreaking for the Washington Monument, and the issuance of the first postage stamps in the United States.
He promised to serve only one term and did not run for reelection. He died of cholera three months after his term ended.
Scholars have ranked him favorably on the list of greatest presidents for his ability to set an agenda and achieve all of it. Polk has been called the "least known consequential president"[2] of the United States.Polk initially hoped to be nominated for vice-president at the Democratic convention, which began on May 27, 1844. The leading contender for the presidential nomination was former President Martin Van Buren, who wanted to stop the expansion of slavery. Other candidates included James Buchanan, General Lewis Cass, Cave Johnson, John C. Calhoun, and Levi Woodbury. The primary point of political contention involved the Republic of Texas, which, after declaring independence from Mexico in 1836, had asked to join the United States. Van Buren opposed the annexation but in doing so lost the support of many Democrats, including former President Andrew Jackson, who still had much influence. Van Buren won a simple majority on the convention's first ballot but did not attain the two-thirds supermajority required for nomination. When it became clear after another six ballots that Van Buren would not win the required majority, Polk emerged as a "dark horse" candidate. After an indecisive eighth ballot, the convention unanimously nominated Polk.
Before the convention, Jackson told Polk that he was his favorite for the nomination of the Democratic Party. Even with this support, Polk instructed his managers at the convention to support Van Buren if he could win the nomination. This assured that if a deadlocked convention occurred, initial supporters of Van Buren would pick Polk as a compromise candidate for the Democrats. In the end, this is exactly what happened as a result for Polk's support of westward expansion.[38]
When advised of his nomination, Polk replied: "It has been well observed that the office of President of the United States should neither be sought nor declined. I have never sought it, nor should I feel at liberty to decline it, if conferred upon me by the voluntary suffrages of my fellow citizens." Because the Democratic Party was splintered into bitter factions, Polk promised to serve only one term if elected, hoping that his disappointed rival Democrats would unite behind him with the knowledge that another candidate would be chosen in four years.[39]


1844 campaign banner, produced by Nathaniel Currier.
Polk's Whig opponent in the 1844 presidential election was Henry Clay of Kentucky. (Incumbent Whig President John Tyler—a former Democrat—had become estranged from the Whigs and was not nominated for a second term.) The annexation of Texas, which was at the forefront during the Democratic Convention, again dominated the campaign. Polk was a strong proponent of immediate annexation, while Clay seemed more equivocal and vacillating.
Another campaign issue, also related to westward expansion, involved the Oregon Country, then under the joint occupation of the United States and the Uited Kingdom. The Democrats had championed the cause of expansion, informally linking the controversial Texas annexation issue with a claim to the entire Oregon Country, thus appealing to both Northern and Southern expansionists. (The slogan "Fifty-four Forty or Fight," often incorrectly attributed to the 1844 election, did not appear until later; see Oregon boundary dispute.) Polk's consistent support for westward expansion—what Democrats would later call "Manifest Destiny"—likely played an important role in his victory, as opponent Henry Clay hedged his position.
In the election, Polk and his running mate, George M. Dallas, won in the South and West, while Clay drew support in the Northeast. Polk lost his home state, Tennessee, but won New York, where Clay lost votes to the antislavery Liberty Party candidate James G. Birney. Also contributing to Polk's victory was the support of new immigrant voters, who opposed the Whigs' policies. Polk won the popular vote by a margin of about 39,000 out of 2.6 million, and took the Electoral College with 170 votes to Clay's 105.[40] Polk won 15 states, while Clay won 11.[41]
Polk is the only Speaker of the House of Representatives to be elected President of the United States.
by Wikipedia