Introduction

The ultimate reason for the tension leading to the American Civil War was Manifest Destiny and the expansion of slavery into the new territories gained during the western expansion of the United states. Many historians agree with this statement because the past documents and other information point to it being the leading cause of the war. Though economic tensions were the main focused argument points for the political parties, during the early western expansion, slavery became the major issue that ultimately lead to the Civil War because it was no longer about gaining new territory, but shaping the United States for the future. As historian Daniel Howe from The Journal of American History stated,” The debate over slavery in the territories was, by common consent of historians, one of the most momentous in American history.”1.

  The major factors where Manifest Destiny and the slavery expansion affected the United States and the lead up to The Civil War, were the early expansions of Colonial America and the development of Manifest Destiny. Also the sectionalization of American politics and the rise of anti-slavery movements.


1.Howe, Daniel. "Slavery and the American West: The Eclipse of Manifest Destiny and the Coming of the Civil War. by Michael A. Morrison." Slavery and the American West: The Eclipse of Manifest Destiny and the Coming of the Civil War. by Michael A. Morrison 85, no. 1 (1998): 242-243. http://www.jstor.org.ezproxy.lib.uconn.edu/stable/2568497