11: A Nation on the Move- Westward Expansion, 1800–1860 Last updated Save as PDF Page ID 2149 OpenStax OpenStax 11.1: Lewis and Clark 11.2: The Missouri Crisis 11.3: Independence for Texas 11.4: The Mexican-American War, 1846–1848 11.5: Free Soil or Slave? The Dilemma of the West