This PowerPoint presentation examines the political events and territorial expansion occurring between 1840 and 1845. It begins with a brief review of the campaign of 1840 and the formation of the Whig party. It then looks at the agenda of Henry Clay and the Whig party post 1840 election and the impact of the death of William Henry Harrison. The second 2/3 of the presentation focus on territorial expansion. It begins with an overall view of the concept of manifest destiny. It then puts that idea into action, first looking quickly at the Aroostook war. It then turns its focus out West looking at the Texas war for independence, the debate over Texas annexation, and the settlement of the Oregon Country. It concludes with the presidential campaign of 1844 and the election of James K. Polk. This presentation is used in an AP United States history class and is based on Chapter 17 of The American Pageant, 14th Edition.