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Manifest Destiny, Westward Expansion, And Increased Sectionalism

  • Manifest Destiny: : the ideology that it was American’s God-given right to expand westward (from the Atlantic to the Pacific), that white people of northern Euro. ancestry were superior
  • By the 1820s, the Mex. govt encouraged American immigration into Texas in order to strengthen the economy & increase tax revenues; the promise of cheap land attracted many white settlers to the region.
  • Eventually, Texas became independent after the Battle of San Jacinto & they signed a treaty giving TX independence
  • Huge westward migration: between 1840-1860, about 300,000 migrants traveled along the great overland trails
  • The Election of 1844 determined U.S. policy toward CA, OR, & TX & James Polk (Democrat) was a strong supporter of annexation & “re-occupation of Oregon” & used the slogan “fifty four forty or fight!” Polk wins & makes Texas a state in 1845.
  • The Mexican American War broke out in 1846 (provoked by the U.S.) and ended in 1848.
  • By 1846, a settlement was negotiated: Treaty of Guadalupe Hidalgo (finally signed in 1848) whereby Mexico agreed to cede CA & NM to the U.S. & acknowledge the Rio Grande as the boundary of TX
  • As westward expansion continued, sectionalism grew because of disagreements between pro-slavery and anti-slavery Americans.
  • More about Manifest Destiny: http://www.pbs.org/kera/usmexicanwar/prelude/md_introduction.html

Manifest Destiny, Westward Expansion, And Increased Sectionalism

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  1. Intro
    • Overview
      • Westward Expansion
      • John Gast's American Progress
        • Americans in Texas
        • Stephen Austin: “The father of Texas” and Sam Houston, the First President of the Republic of Texas
          • Tensions between U.S. and Mexico
          • U.S. Settlements and The Texas War of Independence
          • Main Battles in the Texas War of Independence
            • Oregon
            • Huge Westward Migration and Trails
            • Expansion Issue Politicized
            • Compromise over Oregon And The Southwest
            • Map of the U.S.-Mexican War
              • U.S.-Mexican War
              • Mexican Cession
                • Polk Supports Extending the Missouri Compromise Line
                • The Sectional Debate Heats Up
                • Dissent and Divergence
                • Example 1
                  • Example 2
                    • Example 3
                      • Intro 0:00
                      • Overview 0:08
                      • Westward Expansion 3:17
                        • Manifest Destiny
                        • Penny Press
                        • Empire of Liberty
                      • John Gast's American Progress 8:05
                      • Americans in Texas 10:03
                        • Interested in Texas
                        • American Immigration Into Texas
                        • Stephen Austin
                        • Revolt Broke Out
                      • Stephen Austin: “The father of Texas” and Sam Houston, the First President of the Republic of Texas 13:36
                      • Tensions between U.S. and Mexico 14:02
                        • Legalize Slavery
                        • Instability in Mexico
                        • Independence of Texas
                        • Battle of San Jacinto
                      • U.S. Settlements and The Texas War of Independence 17:09
                        • U.S. Annexation of Texas
                        • Southern Democrats
                        • Election of 1844
                        • President martin Van Buren Refused
                      • Main Battles in the Texas War of Independence 18:55
                      • Oregon 19:51
                        • U.S. and British Sovereignty
                        • The Catholic Missionaries From Canada
                        • Oregon Fever
                        • A Measles Epidemic
                      • Huge Westward Migration and Trails 21:50
                        • Great Overland Trails
                        • Gender Lines
                      • Expansion Issue Politicized 23:37
                        • The Election of 1844
                        • President Tyler
                        • James Polk
                        • Fifty Four Forty or Fight
                      • Compromise over Oregon And The Southwest 25:26
                        • Border 49th Parallel
                        • The Northern Border of Oregon
                        • Zachary Taylor
                        • The Mexican American War
                      • Map of the U.S.-Mexican War 26:43
                      • U.S.-Mexican War 28:30
                        • John Slidell
                        • Whig Critics
                        • Treaty of Guadalupe Hidalgo
                      • Mexican Cession 29:42
                      • Polk Supports Extending the Missouri Compromise Line 30:43
                        • Banning Slavery North of the Line and Permitting it South of the Line
                        • Popular Sovereignty
                      • The Sectional Debate Heats Up 31:41
                        • Polk's Expansionist Agenda
                        • The Wilmot Proviso
                        • A Threat to Republican Liberties and White Yeoman Farming
                      • Dissent and Divergence 34:08
                        • Dissenter of the U.S.-Mexican War
                        • Frederick Douglass
                        • Diverging Views of Douglass and Garrison
                      • Example 1 37:32
                      • Example 2 40:54
                      • Example 3 41:50