Franklin Pierce in the context of "Benjamin Pierce (governor)"

The Kansas–Nebraska Act of 1854 (10 Stat. 277) was a territorial organic act that created the territories of Kansas and Nebraska. It was drafted by Democratic Senator Stephen A. Douglas, passed by the 33rd United States Congress, and signed into law by President Franklin Pierce. Douglas introduced the bill intending to open up new lands to develop and facilitate the construction of a transcontinental railroad. However, the Kansas–Nebraska Act effectively repealed the Missouri Compromise of 1820, stoking national tensions over slavery and contributing to a series of armed conflicts known as "Bleeding Kansas".

The United States had acquired vast amounts of land in the 1803 Louisiana Purchase, and since the 1840s, Douglas had sought to establish a territorial government in a portion of the Louisiana Purchase that was still unorganized. Douglas's efforts were stymied by Senator David Rice Atchison of Missouri and other Southern leaders who refused to allow the creation of territories that banned slavery; slavery would have been banned because the Missouri Compromise outlawed slavery in the territory north of latitude 36° 30′ north (except for Missouri). To win the support of Southerners like Atchison, Pierce and Douglas agreed to back the repeal of the Missouri Compromise, with the status of slavery instead decided based on "popular sovereignty". Under popular sovereignty, the citizens of each territory, rather than Congress, would determine whether slavery would be allowed.

The 33rd United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1853, to March 4, 1855, during the first two years of Franklin Pierce's presidency. During this session, the Kansas–Nebraska Act was passed, an act that soon led to the creation of the Republican Party. The apportionment of seats in the House of Representatives was based on the 1850 United States census. Both chambers had a Democratic majority.

Presidential elections were held in the United States on November 2, 1852. Democratic nominee Franklin Pierce defeated Whig nominee General Winfield Scott.

Incumbent Whig President Millard Fillmore had succeeded to the presidency in 1850 upon the death of President Zachary Taylor. Fillmore endorsed the Compromise of 1850 and enforced the Fugitive Slave Law. This earned Fillmore Southern voter support and Northern voter opposition. On the 53rd ballot of the sectionally divided 1852 Whig National Convention, Scott defeated Fillmore for the nomination. Democrats divided among four major candidates at the 1852 Democratic National Convention. On the 49th ballot, dark horse candidate Franklin Pierce won nomination by consensus compromise. The Free Soil Party, a third party opposed to the extension of slavery in the United States and into the territories, nominated New Hampshire Senator John P. Hale.

James Buchanan Jr. (/bjuːˈkænən/ bew-KAN-ən; April 23, 1791 – June 1, 1868) was the 15th president of the United States, serving from 1857 to 1861. He also served as the secretary of state from 1845 to 1849 and represented Pennsylvania in both houses of the U.S. Congress. Buchanan was an advocate for states' rights, particularly regarding slavery, and minimized the role of the federal government preceding the American Civil War.

Buchanan was a lawyer in Pennsylvania and won his first election to the state's House of Representatives as a member of the Federalist Party. He was elected to the U.S. House of Representatives in 1820 and retained that post for five terms, aligning with Andrew Jackson's Democratic Party. Buchanan served as Jackson's minister to Russia in 1832. He was elected a U.S. senator from Pennsylvania in 1834 and served for 11 years. He was appointed to serve as President James K. Polk's secretary of state in 1845, and eight years later was named as President Franklin Pierce's minister to the United Kingdom.

The Gadsden Purchase (Spanish: Venta de La Mesilla "La Mesilla sale") is a 29,640-square-mile (76,800 km) region of present-day southern Arizona and southwestern New Mexico that the United States acquired from Mexico by the Treaty of Mesilla, which took effect on June 8, 1854. The purchase included lands south of the Gila River and west of the Rio Grande where the United States wanted the construction of what is now known as the Sunset Route, a transcontinental railroad, to be carried out, which the Southern Pacific Railroad later completed in 1881–1883. This allowed for the railroad's construction to be shorter, easier, and straighter. Without said purchase, the railroad's expansion would have taken longer and been more expensive. The purchase also aimed to resolve other border issues.

The first draft was signed on December 30, 1853, by James Gadsden, U.S. Minister to Mexico, and by Antonio López de Santa Anna, president of Mexico. The U.S. Senate voted in favor of ratifying it with amendments on April 25, 1854, and then sent it to President Franklin Pierce. Mexico's government and its General Congress or Congress of the Union took final approval action on June 8, 1854, when the treaty took effect. The purchase was the last substantial territorial acquisition in the contiguous United States, and defined the Mexico–United States border. The Arizona cities of Tucson, Yuma and Tombstone are on territory acquired by the U.S. in the Gadsden Purchase.

The Confederate States Army (CSA), also called the Confederate army or the Southern army, was the military land force of the Confederate States of America (commonly referred to as the Confederacy) during the American Civil War (1861–1865), fighting against the United States forces to support the rebellion of the Southern states and uphold and expand the institution of slavery. On February 28, 1861, the Provisional Confederate Congress established a provisional volunteer army and gave control over military operations and authority for mustering state forces and volunteers to the newly chosen Confederate States president, Jefferson Davis (1808–1889). Davis was a graduate of the United States Military Academy, on the Hudson River at West Point, New York, and colonel of a volunteer regiment during the Mexican–American War (1846–1848). He had also been a United States senator from Mississippi and served as U.S. Secretary of War under 14th president Franklin Pierce. On March 1, 1861, on behalf of the new Confederate States government, Davis assumed control of the military situation at Charleston Harbor in Charleston, South Carolina, where South Carolina state militia had besieged the longtime Federal Fort Sumter in Charleston harbor, held by a small U.S. Army garrison under the command of Major Robert Anderson (1805–1871). By March 1861, the Provisional Congress of the Confederate States meeting in the temporary capital of Montgomery, Alabama, expanded the provisional military forces and established a more permanent regular Confederate States Army.

An accurate count of the total number of individuals who served in the Military forces of the Confederate States (Army, Navy and Marine Corps) is not possible due to incomplete and destroyed/burned Confederate records; and archives. Estimates of the number of Confederate soldiers, sailors and marines are between 750,000 and over 1,000,000 troops. This does not include an unknown number of black slaves who were pressed into performing various tasks for the army, such as the construction of fortifications and defenses or driving wagons. Since these figures include estimates of the total number of soldiers who served at any time during the war, they do not represent the size of the army at any given date. These numbers also do not include sailors/marines who served in the Confederate States Navy.

Winfield Scott (June 13, 1786 – May 29, 1866) was an American military commander and a presidential candidate. He served as Commanding General of the United States Army from 1841 to 1861, and was a veteran of the War of 1812, American Indian Wars, Mexican–American War, and the early stages of the American Civil War. Scott was the Whig Party's presidential nominee in the 1852 election but was defeated by Democrat Franklin Pierce. He was known as Old Fuss and Feathers for his insistence on proper military etiquette and the Grand Old Man of the Army for his many years of service.

Scott was born near Petersburg, Virginia, in 1786. After training as a lawyer and brief militia service, he joined the army in 1808 as a captain of the light artillery. In the War of 1812, Scott served on the Canadian front, taking part in the Battle of Queenston Heights and the Battle of Fort George, and was promoted to brigadier general in early 1814. He served with distinction in the Battle of Chippawa but was badly wounded in the subsequent Battle of Lundy's Lane. After the conclusion of the war, Scott was assigned to command army forces in a district containing much of the Northeastern United States, and he and his family made their home near New York City. During the 1830s, Scott negotiated an end to the Black Hawk War, took part in the Second Seminole War and the Creek War of 1836, and presided over the forced removal of the Cherokee. Scott also helped to avert war with the United Kingdom, defusing tensions arising from the Patriot War and the Aroostook War.

Franklin Pierce served as the 14th president of the United States from March 4, 1853, to March 4, 1857. Pierce, a Democrat from New Hampshire, took office after defeating 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. His hopes for reelection ended after losing the Democratic nomination at the 1856 Democratic National Convention. He was succeeded by Democrat James Buchanan.

Pierce vetoed funding for internal improvements, called for a lower tariff, and vigorously enforced the Fugitive Slave Act of 1850. Influenced by the Young America expansionist movement, the Pierce administration completed the Gadsden land purchase from Mexico, clashed with Great Britain in Central America, and led a failed attempt to acquire Cuba from Spain. Pierce's administration was severely criticized after several of his diplomats issued the Ostend Manifesto, which called for the annexation of Cuba, by force if necessary. His popularity in the Northern free states declined sharply after he supported the 1854 Kansas–Nebraska Act, which nullified the Missouri Compromise. Passage of the act led directly to a long and violent conflict over the expansion of slavery in the Western United States.