Question: The 3852 Democratic National Convention nominated Franklin Pierce over what American military officer who represented Michigan in the United States Senate?

full_context: Document 1: 1860 Democratic National Conventions: The three 1860 Democratic National Conventions were crucial events in the lead-up to the American Civil War. The first Democratic national convention adjourned in deadlock without choosing candidates for President and Vice President. A second official convention nominated Senator Stephen A. Douglas of Illinois for President and former Senator Herschel V. Johnson of Georgia for Vice President. A third, “rump,” convention, primarily Southerners, nominated Vice President John C. Breckinridge for President and Senator Joseph Lane of Oregon for Vice President.
Document 2: James K. Polk: James Knox Polk (November 2, 1795 – June 15, 1849) was the 11th President of the United States (1845–49). He previously served as the 13th Speaker of the House of Representatives and as Governor of Tennessee. A protege of Andrew Jackson, Polk was a member of the Democratic Party and an adherent of Jacksonian democracy and Manifest Destiny. During his presidency, the United States expanded significantly with the annexation of Republic of Texas, the Oregon Treaty, and the conclusion of the Mexican-American War.
Document 3: 1872 Democratic National Convention: The 1872 Democratic National Convention was a presidential nominating convention held at Ford's Grand Opera House on East Fayette Street, (between North Howard and North Eutaw Streets) in Baltimore, Maryland on July 9 to 10, 1872. It resulted in the nomination of newspaper publisher Horace Greeley, (1811-1872), of New York and Governor Benjamin Gratz Brown, (1826-1885), of Missouri for President and Vice President, a ticket previously nominated by the rump Liberal Republican faction convention meeting also in Baltimore's newly built premier Opera House of nationally well-known theatre owner/operator John T. Ford, (1829-1894), (infamous as the owner of the Ford's Theatre in Washington, D.C. where 16th President Abraham Lincoln had been assassinated in April 1865) of the major Republican Party which had already re-nominated incumbent 18th President Ulysses S. Grant, (1822-1885), of the regular Republicans for another term.
Document 4: Freeport Doctrine: The Freeport Doctrine was articulated by Stephen A. Douglas at the second of the Lincoln-Douglas debates on August 27, 1858, in Freeport, Illinois. Former one-term U.S. Representative Abraham Lincoln was campaigning to take Douglas' U.S. Senate seat by strongly opposing all attempts to expand the geographic area in which slavery was practiced. Lincoln tried to force Douglas to choose between the principle of popular sovereignty proposed by the Kansas-Nebraska Act (which left the fate of slavery in a U.S. territory up to its inhabitants), and the majority decision of the United States Supreme Court in the case of "Dred Scott v. Sandford", which stated that slavery could not legally be excluded from U.S. territories (since Douglas professed great respect for Supreme Court decisions, and accused the Republicans of disrespecting the court, yet this aspect of the "Dred Scott" decision was contrary to Douglas' views and politically unpopular in Illinois). Instead of making a direct choice, Douglas' response stated that despite the court's ruling, slavery could be prevented from any territory by the refusal of the people living in that territory to pass laws favorable to slavery. Likewise, if the people of the territory supported slavery, legislation would provide for its continued existence.
Document 5: Democratic Party presidential primaries, 1924: The 1924 Democratic presidential primaries were part of the selection process by which voters of the Democratic Party chose its nominee for President of the United States in the 1924 U.S. presidential election. The concept of a primary election, where any registered party member would vote for a candidate, was relatively new in the American political landscape. In only 12 states were actual primaries held, and even in those the results were not universally binding for the delegates to the Democratic National Convention, where the presidential candidate would be formally chosen. In most of the country, the selection of delegates was confined to state-level conventions and caucuses, under the heavy hand of local political machines. Though William Gibbs McAdoo won a vast majority of states, and much more than half of the popular vote, in those twelve states that held primary elections, it meant little to his performance nationwide. Many of the delegations from states that did "not" hold primary elections favored his main rivals, Oscar Underwood of Alabama and Al Smith of New York, neither of which won any primary elections. As well, the primaries that McAdoo did not win were won by "local sons" who stood no chance of winning the nomination, or in some cases were not even formal candidates. Once at the convention, the party was deadlocked for 102 straight ballots, before dark horse candidate John W. Davis, (who was not a formal candidate when he arrived at the convention) was chosen on the 103rd ballot. Davis went on to lose the election to Republican candidate Calvin Coolidge.
Document 6: Cassius Marcellus Clay (politician): Cassius Marcellus Clay ( ; October 19, 1810 – July 22, 1903), nicknamed the "Lion of White Hall", was a Kentucky planter, politician, and emancipationist who worked for the abolition of slavery. He freed the slaves that were handed down as his inheritance from his father. Those freed slaves were allowed to stay and were paid a wage. He was appointed by President Abraham Lincoln as the United States minister to Russia during the American Civil War, and is credited with gaining Russian support for the Union.
Document 7: 1884 Democratic National Convention: In 1884, the Democrats gathered in Chicago for their National Convention. The leading candidate for the presidential nomination was New York Governor Grover Cleveland. Cleveland's reputation for good government made him a national figure. The Republican Party nominated James G. Blaine for president in 1884, although he had been implicated in a financial scandal. Many influential Republicans were outraged, thought the time had come for a national reform administration and withdrew from the convention. These Republicans are called mugwumps, and declared that they would vote for the Democratic candidate based on his integrity. The Democrats made Cleveland their presidential nominee with the former Governor Thomas A. Hendricks of Indiana as the vice presidential nominee.
Document 8: 1856 State of the Union Address: The 1856 State of the Union Address was given by Franklin Pierce, the 14th President of the United States. It was presented to the 34th United States Congress by the Clerk of the United States House of Representatives. He said, "it is necessary only to say that the internal prosperity of the country, its continuous and steady advancement in wealth and population and in private as well as public well-being, attest the wisdom of our institutions and the predominant spirit of intelligence and patriotism which, notwithstanding occasional irregularities of opinion or action resulting from popular freedom, has distinguished and characterized the people of America." He also stated, "In the long series of acts of indirect aggression, the first was the strenuous agitation by citizens of the Northern States, in Congress and out of it, of the question of Negro emancipation in the Southern States." President Pierce supported the Kansas-Nebraska act. This neutralized the issue of slavery in the central states, and did not say whether to allow it or not.
Document 9: 1840 Democratic National Convention: The 1840 Democratic National Convention was held in Baltimore. The Democrats nominated President Martin Van Buren for reelection in 1840 in spite of his unpopularity following the Panic of 1837. Vice President Richard M. Johnson was not retained on the ticket, as he was largely seen as a liability in the 1836 election and had focused much of his time as vice president on his own economic affairs. Former President Andrew Jackson backed James K. Polk for the position of vice president, but Van Buren supported his vice president's renomination. The convention ultimately decided not to nominate a running mate for Van Buren. As a result, Van Buren became the only major party presidential nominee since the passage of the 12th Amendment to seek election without a running mate.
Document 10: Presidency of Franklin Pierce: The presidency of Franklin Pierce began on March 4, 1853, when Franklin Pierce was inaugurated as President of the United States, and ended on March 4, 1857. Pierce, a Democrat from New Hampshire, took office as the 14th United States president after routing Whig Party nominee Winfield Scott in the 1852 presidential election. Seen by fellow Democrats as pleasant and accommodating to all the party's factions, Pierce, then a little-known politician, won the presidential nomination on the 49th ballot of the 1852 Democratic National Convention.
Document 11: Jefferson Davis: Jefferson Davis (born Jefferson Finis Davis; June 3, 1808 – December 6, 1889) was an American politician who served as the President of the Confederate States from 1861 to 1865. He was a member of the Democratic Party who represented Mississippi in the United States Senate and the House of Representatives prior to becoming president of the Confederacy. He was the 23rd United States Secretary of War, serving under U.S. President Franklin Pierce from 1853 to 1857.
Document 12: Lewis Cass: Lewis Cass (October 9, 1782June 17, 1866) was an American military officer, politician, and statesman. He represented Michigan in the United States Senate and served in the Cabinet of Andrew Jackson and James Buchanan. He was also the 1848 Democratic presidential nominee and a leading spokesman for the Doctrine of Popular Sovereignty, which held that the people in each territory should decide whether to permit slavery.
Document 13: Louis McLane: Louis McLane (May 28, 1786 – October 7, 1857) was an American lawyer and politician from Wilmington, in New Castle County, Delaware, and Baltimore, Maryland. He was a veteran of the War of 1812 and a member of the Federalist Party and later the Democratic Party. He served as the U.S. Representative from Delaware, U.S. Senator from Delaware, U.S. Secretary of the Treasury, U.S. Secretary of State, Minister Plenipotentiary to the United Kingdom, and President of the Baltimore and Ohio Railroad. As a member of President Andrew Jackson's Cabinet, McLane was a prominent figure during the Bank War. McLane pursued a more moderate approach towards the Second Bank of the United States than the President, but agreed with Jackson's decision in 1832 to veto a Congressional bill renewing the Bank's charter. He also helped draft the Force Bill in 1833.
Document 14: 1852 Democratic National Convention: The 1852 Democratic National Convention nominated the dark horse candidate Franklin Pierce for President on the 49th ballot, passing over better known candidates Lewis Cass of Michigan (the previous nominee in 1848), James Buchanan of Pennsylvania, and Stephen A. Douglas of Illinois. It was held at the Maryland Institute in the eastern downtown business district of Baltimore, Maryland, just two weeks before the opposing Whig Party met in the same hall for their nominating convention.
Document 15: 1856 Democratic National Convention: The 1856 Democratic National Convention was the seventh political convention of the United States Democratic Party. Held from June 2 to June 6, 1856, prior to the November elections, at Smith & Nixon's Hall in Cincinnati, on the Ohio River in Ohio, it was the first national party nominating convention outside the original thirteen states. The party nominated James Buchanan, U.S. Ambassador to Great Britain, for President (denying re-nomination to incumbent President Franklin Pierce), and former Representative John C. Breckinridge of Kentucky for Vice President.
ground_truth: Lewis Cass