Westward Expansion Timeline By ashierob1252 Mar 14, 1749 Cotton Gin was invented Feb 1, 1798 XYZ Affair Feb 1, 1800 XYZ affair Apr 30, 1803 Lousianna Purchase Feb 22, 1819 Adams-Onis Treaty Mar 3, 1820 Missouri Compromise Dec 2, 1823 Monroe Doctrine May 28, 1830 Indian Removal Act/Trail of Tears Feb 6, 1836 The Battle of the Alamo Feb 23, 1836 The Battle of the Alamo Mar 2, 1836 Texas Claims Independence Jan 1, 1838 Trail of Tears Jan 1, 1839 Trail of Tears Dec 29, 1845 Texas annexed to U.S. Apr 25, 1846 Mexican-American War Jun 14, 1846 Agreement of 49th Parallel Feb 2, 1848 Mexican-American War Feb 2, 1848 Treaty of Guadalupe Hidalgo Sep 9, 1850 California becomes a state Dec 30, 1853 Gadsden Purchase May 30, 1854 Kansas-Nebraska Act
