The reasons why the United States declared war on Mexico, and how the Mexican War was fought to a successful conclusion.
The methods used to enact the Compromise of 1850, and its reception by the American people.
The role of the major political parties in the widening sectional split.
The part played by Stephen A. Douglas in the enactment of the Kansas-Nebraska Act, and the effect of this act on his career and on the attitudes of the people in all sections.
The impact of the Dred Scott decision on sectional attitudes and on the prestige of the Supreme Court.
The reasons for Abraham Lincoln's victory in 1860, and the effect of his election on the sectional crisis.
Each of the terms below contributes to a comprehensive understanding of how the idea of Manifest Destiny influenced America, how the question of expanding slavery deepened divisions between the North and the South, and how the issue of slavery reshaped the American political-party system. As your students define these terms, encourage them to demonstrate why each person, event, concept, or issue is important to a thorough understanding of this chapter.