Ch 13: A House Divided.

A short-lived political party in the United States active in the 1848 and 1852 presidential elections, and in some state elections. Founded in Buffalo, New York, it was a third party and a single-issue party that largely appealed to and drew its greatest strength from New York State. The party leadership consisted of former anti-slavery members of the Whig Party and the Democratic Party. Its main purpose was opposing the expansion of slavery into the western territories, arguing that free men on free soil comprised a morally and economically superior system to slavery. They opposed slavery in the new territories (agreeing with the Wilmot proviso) and sometimes worked to remove existing laws that discriminated against freed African Americans in states such as Ohio.

Created the territories of Kansas and Nebraska, opening new lands for settlement, and had the effect of repealing the Missouri Compromise of 1820 by allowing white male settlers in those territories to determine through popular sovereignty whether they would allow slavery within each territory. The act was designed by Democratic Senator Stephen A. Douglas of Illinois. The initial purpose of the Kansas-Nebraska Act was to open up many thousands of new farms and make feasible a Midwestern Transcontinental Railroad. It became problematic when popular sovereignty was written into the proposal so that the voters of the moment would decide whether slavery would be allowed. The result was that pro- and anti-slavery elements flooded into Kansas with the goal of voting slavery up or down, leading to a bloody civil war there.

An American political movement that operated on a national basis during the mid 1850s. It promised to purify American politics by limiting or ending the influence of Irish Catholics and other immigrants, thus reflecting nativism and anti-Catholic sentiment. It was empowered by popular fears that the country was being overwhelmed by German and Irish Catholic immigrants, whom they saw as hostile to republican values and controlled by the pope in Rome. Mainly active from 1854 to 1856, it strove to curb immigration and naturalization, but met with little success. Membership was limited to Protestant males. There were few prominent leaders, and the largely middle-class membership fragmented over the issue of slavery.

A landmark decision by the U.S. Supreme Court in which the Court held that African Americans, whether slave or free, could not be American citizens and therefore had no standing to sue in federal court,[2][3] and that the federal government had no power to regulate slavery in the federal territories acquired after the creation of the United States. Dred Scott, an African American slave who had been taken by his owners to free states and territories, attempted to sue for his freedom. In a 7-2 decision written by Chief Justice Roger B. Taney, the Court denied Scott's request and in doing so, ruled an Act of Congress to be unconstitutional for the second time in its history.